Thinking Like a Historian

The past is everything that has already happened. History is the account we build from its surviving traces. Historians start with questions because those traces cannot explain themselves.

Make the question manageable

“Rome” is a topic. “What happened to Rome?” is too wide for one inquiry. “Why did the Western Roman Empire collapse in the 400s CE?” names a place, a period, and something to explain.

A useful inquiry question is open, focused, and researchable. An open question needs an explanation. A focused question gives the investigation clear edges. A researchable question has sources that could help answer it.

Closed questions have short factual answers. “When did the Romans build Hadrian's Wall?” helps establish a date. “Why did they build it?” asks for an explanation. Both help, but the open question usually drives the inquiry.

The wording should leave room for the evidence. “Why were the Romans cruel?” already judges them. “How did the Romans treat conquered peoples?” lets you examine different experiences. A question about Caesar's favorite color is narrow, but without surviving evidence it cannot guide a useful investigation.

Plan and test a first answer

A hypothesis is a first possible answer. For Rome, it might be: “Invasions were the main cause of collapse.” This gives you something to test. You would look for evidence about invasions, but also about money, armies, and Roman rulers. Searching only for agreement would leave the hypothesis untested.

Match sources to the question. Archaeological sites hold material remains. Museums keep objects; archives keep documents. Libraries contain books and historians' accounts. Their online collections can also help. Record the maker, title, date, and location of each source as you work.

Follow the inquiry through

1. Ask a clear question.
2. Plan the evidence you need and where to find it.
3. Gather sources, then examine their content and trustworthiness.
4. Build a conclusion supported by evidence.
5. Share the answer and explain your reasoning.
6. Reflect on what worked and what remains unknown.

An inquiry can loop back. A source about unpaid soldiers might lead you to investigate army costs more closely. You may change the question, gather another source, or revise the hypothesis.

At the end, separate what you found from what is still uncertain. Name a missing source that would help, or a new question worth asking. Revising an answer after new evidence is part of doing history well.

A source is something that tells us about the past. A letter, a building, a song, or a cooking pot can be a source. Information from it becomes evidence when you use it to support an answer.

Primary or secondary?

A primary source comes from the time being studied or from a participant or witness. A secondary source is a later account made by someone who was not there, often using primary sources.

Primary does not mean more accurate: a witness can be mistaken, while a later account can compare many sources.

The question decides the role. Gibbon's book is secondary evidence about ancient Rome, but primary evidence about thinking in his own time. Age alone is not enough: a painting made in 1600 is still a later picture of Caesar's life.

Tacitus described Boudica's revolt of 60–61 CE in the 110s CE. He was writing roughly fifty years later. His father-in-law Agricola served in Britain during the revolt, so Tacitus may have heard a participant's account. His work is an important ancient account, but he was not an eyewitness to the revolt.

Different kinds of evidence

• Written: letters, laws, inscriptions, and histories.
• Visual: pictures, carvings, mosaics, and maps.
• Material: pottery, tools, coins, buildings, and human remains.
• Oral: spoken memories, songs, and stories.

Kinds can overlap: a coin is an object with words and images. Oral history records a person's own memories. Oral traditions pass knowledge through generations. Examples include Māori traditions and the histories recited by West African griots. Ask who passed the account on, to whom, and how.

Learn from remains

Historians often work with writing. Archaeologists study material remains and record where each find lay. In undisturbed ground, lower layers are usually older. Digging without recording the layers would lose that evidence.

Radiocarbon dating studies carbon-14 left in once-living material, such as wood or bone. It works back about 50,000 years. Tree-ring dating matches patterns of growth rings in wood.

Ötzi's body was found in Alpine ice on September 19, 1991. Dating showed he lived around 3300 BCE, about 5,300 years ago. His body, clothes, copper axe, and other belongings reveal a life without a written account. People who left no writing still have a history.

Before using a source, read its caption or label. It often tells you who made it, when, and why. Those details help explain the message you are about to read.

Find the source's background

A source's provenance includes its maker, date, place, type, audience, and purpose. The audience is who it was for. The purpose is why it was made: to record, persuade, celebrate, inform, entertain, or give orders.

Augustus, the first Roman emperor, wrote a list of his achievements called the Res Gestae. It was displayed after his death in 14 CE. Its maker was the ruler himself, and its purpose was to shape his public memory. That matters when reading his praise of his wars.

The account leaves out the proscriptions of 43 BCE, when Augustus and his allies had political enemies killed. The omission helps us understand the account's purpose. It is valuable evidence of how Augustus wanted people to remember him.

Separate observation from inference

First describe the content: what the source directly says or shows. Then make an inference: something you work out from those details.

A Roman coin shows an emperor wearing a laurel wreath. The wreath is an observed detail. Knowing that Romans linked laurel with victory, we can infer that the image presented him as a winner. The link between detail and meaning is the reasoning.

Write that link clearly: “The laurel wreath suggests that the emperor wanted to appear victorious.” Saying that every person admired him would go beyond what the coin shows. A claim without supporting clues is speculation.

Check facts and opinions

A fact is a statement that can be checked with evidence. “Hadrian's Wall was about 73 miles (117 km) long” is checkable. An opinion is a judgment, such as “It was Rome's greatest achievement.” People may judge greatness differently.

A checkable statement can still be wrong. Calling something a fact describes the kind of claim; evidence is needed to establish whether it is accurate.

Read pictures with the same care

An Assyrian palace carving shows a king defeating enemies. The king's palace and the visitors who saw it help explain its purpose: displaying royal power. It also contains details of weapons and clothing.

Ask two separate questions: “What does it show?” and “Why did its maker show it this way?” Retelling the scene answers the first. Explaining the choice of scene and its audience begins the analysis.

Reliability means how far we can trust a source's accuracy on a particular point. A writer can describe a place carefully but exaggerate a victory. Judge the claim you need, not the whole source with one label.

Ask how the maker could know

Was the person there? Could they see the whole event? Did they write at once or much later? Were they keeping a careful supply list or celebrating a ruler? These questions help you judge both knowledge and purpose.

An eyewitness can miss things or misremember them. A later historian may compare several surviving accounts. Neither “eyewitness” nor “secondary” settles reliability by itself.

Bias is a view that favors one side. It can lead a writer to praise allies or hide failures. Look for the effect on a particular claim, then compare it with other evidence.

Work through an exaggerated number

Herodotus wrote about Xerxes's invasion of Greece in 480 BCE. He gave a total of 5,283,220 men. His account describes counting land troops in repeated groups of 10,000. He added reported fleet numbers and later arrivals, reaching 2,641,610 fighting men. He then assumed an equal number of servants and sailors.

The arithmetic explains how he reached the total. It does not make the reports accurate. He wrote decades later for Greek audiences celebrating their victory, and could not check those reports himself. Modern historians judge the army to have been far smaller.

We can therefore distrust this total while using the account to study Greek views of Persia. Bias gives us something to investigate, not a reason to discard every part.

Compare independent evidence

Corroboration means checking a claim against other independent sources. Two accounts copied from one writer repeat one report. Independent sources supply separate support.

Tacitus wrote that Boudica's forces burned Colchester, London, and St Albans around 60–61 CE. Archaeologists found burned layers from that time in those towns. The two kinds of evidence agree about the destruction.

The burned layers do not establish Tacitus's total of about 70,000 deaths. The comparison supports the detail it matches: burning, place, and time.

Accounts of Cleopatra also need comparison. Most surviving ancient accounts were written after Rome defeated her, by Romans or Greeks under Roman rule. Compare their hostile descriptions with Egyptian coins, inscriptions, and temple carvings. Explain how the writer's position affects the claim you are using.

A source is useful when it helps answer your question. A royal victory message may reveal public praise well but say little about defeated families.

Make a usefulness judgment

Consider three things together:

1. Content: What relevant information does it give?
2. Provenance: What do its maker, date, and purpose add?
3. Limitations: What is missing, doubtful, or too narrow?

For example, Roman attacks on Cleopatra's character need careful checking. Yet those accounts are useful for studying how her enemies presented her and justified their war.

One invitation, many questions

At Vindolanda, a Roman fort near Hadrian's Wall, archaeologists found thin wooden writing tablets. One is a birthday invitation from Claudia Severa to Sulpicia Lepidina, from around 100 CE. Part is in Severa's own hand.

For a question about friendships among officers' wives, it is valuable. It comes from a woman at the time and records an invitation to visit. It gives a glimpse of social life within an army community.

For a question about all women in Roman Britain, its reach is limited. It concerns a few wealthy women at one fort. It says little about women farming elsewhere or local people who did not write Latin.

This is a question of representativeness: how typical is the source of the wider group? A vivid personal example can be useful without being typical.

Notice whose voices survive

Wealthy people left more surviving writing than many poorer people. Enslaved people, children, and most women left little writing of their own. Many appear through someone else's words.

Most Iron Age Britons left no written evidence. Some rulers, including Cunobelin, issued coins carrying names. Surviving written accounts still come mainly from outsiders, including Greeks and Romans.

Historians widen the search to objects, buildings, graffiti, and oral traditions. A missing written record can reflect loss, destruction, or a society that passed knowledge on in other ways. Silence alone cannot show that an activity never happened.

Judge the collection too

Different sources can fill different gaps. Writing can supply names; a tool can show a kind of work; a scientific test can establish a date. Ask what the collection covers and whose experiences are still missing. Ten letters from one rich family may leave the same social gap as a single letter.

A historical answer needs more than a list of sources. It must explain how their details support a claim. A useful pattern is claim, evidence, reasoning.

The claim answers the question. The evidence gives a specific detail. The reasoning explains why that detail supports the answer.

Follow an investigation

“How did Ötzi die?” is a question that material evidence can help answer. Early explanations suggested cold and exhaustion. In 2001, X-rays revealed a stone arrowhead in his left shoulder. A 2007 study showed damage to a major artery.

Build the answer in steps:

• Claim: Ötzi was very probably killed by an arrow shot from behind.
• Evidence: The arrowhead remained in his shoulder, and the injury damaged a major artery.
• Reasoning: This injury explains a violent death better than cold alone.

Other clues add to the picture. A cut on his right hand suggests a fight a few days earlier. Food in his stomach shows he ate shortly before death. These clues do not name the attacker or explain the motive. Those questions remain unanswered.

Compare before concluding

Cross-referencing means comparing sources about the same thing. If independent sources agree, explain exactly where they match. If they disagree, ask whether their makers had different information, viewpoints, or purposes.

Suppose two witnesses describe different parts of a battle. Their accounts may differ because they saw different places. Before calling one mistaken, check what each was able to observe.

Evidence against your claim is counter-evidence. Discuss it. It may lead you to narrow the claim or replace it. Hiding an awkward source makes the answer less convincing because the reader cannot judge the full case.

Choose words that fit the support

Use firm language for a well-established finding. Use “probably” when evidence is strong but incomplete, and “possibly” when support is thin. Say “We do not know” when the surviving clues cannot answer the question.

Keep the source details with your notes: maker, title, date, and page or collection. This lets someone else check the evidence. When you share the answer, select the details that answer the question and explain their links. A long quotation without reasoning leaves that work to the reader.

Dates help us place evidence and events in time. A date needs its label: 44 BCE and 44 CE are different years.

Read the era labels

BCE means Before the Common Era; CE means Common Era. BC and AD use the same year numbers. BC means Before Christ. AD comes from Latin words meaning “in the year of the Lord.” Thus 44 BCE is 44 BC, and 476 CE is AD 476.

BCE, CE, and BC follow the number. AD traditionally comes before it. Recent years usually have no label: 1991 means 1991 CE.

BCE years count down toward the era boundary. CE years count up. So 753 BCE comes before 490 BCE, then 44 BCE, then 476 CE. The bigger BCE number lies further back in time.

Count across the boundary

There is no year zero. The sequence goes from 1 BCE straight to 1 CE. From the same point in 1 BCE to 1 CE is one year, not two.

Within BCE, subtract the smaller year number from the larger. From 490 BCE to 44 BCE:

$490-44=446$ years.

Across BCE and CE, add the year numbers, then subtract one. From Rome's traditional founding in 753 BCE to the removal of its last western emperor in 476 CE:

$753+476-1=1228$ years.

The subtraction removes the extra year that adding alone would count.

Recognize estimates and BP

c. means circa, or “about.” “c. 3300 BCE” is an estimated date. Keep the estimate visible when using it.

BP means Before Present, with “present” fixed at 1950. It does not move forward each year. A date of 10,000 calendar years BP is roughly 8000 BCE. A raw radiocarbon result needs calibration before it becomes a calendar date. Scientists compare it with tree-ring and other records to make that correction.

Recognize other ways of counting time

The CE count was worked out by Dionysius Exiguus in the 500s CE. Its starting point was once believed to mark Jesus's birth; historians now place the birth a few years earlier.

Other calendars have other starting points. Islamic AH years count from the Hijra in 622 CE and follow shorter lunar years. Adding 622 alone will not convert them. The Jewish calendar counts from creation in Jewish tradition. Ancient Chinese dates often used rulers' reigns; Romans often named the two consuls in office.

Time can also be represented through seasons or generations. Māori whakapapa links people through ancestry. Understanding the system helps historians read its evidence correctly.

Chronology is the order in which events happened. A timeline makes that order visible. It can also show duration and events happening at the same time.

Find the century

A decade is 10 years, a century 100, and a millennium 1,000. Centuries count from year 1. The 1st century CE runs from 1 to 100; the 2nd runs from 101 to 200.

For most years, remove the last two digits and add one. For 476 CE, keep 4 and add 1: the 5th century CE. For 1991, keep 19 and add 1: the 20th century.

An exact hundred is the last year of its century. The year 1900 ends the 19th century; 1901 begins the 20th. The “1700s” means 1700–1799, while the 18th century is 1701–1800. These spans almost match, but their edges differ.

BCE centuries work backward. The 1st century BCE is 100–1 BCE; the 5th is 500–401 BCE. The year 490 BCE belongs to the 5th century BCE.

Give equal time equal space

On a scaled timeline, one square must always mean the same number of years. To draw 3000 BCE to 500 CE:

1. Find the span: $3000+500-1=3499$ years.
2. Choose one square for 100 years.
3. Allow about 35 squares.
4. Place the era change about 30 squares from the start.

Keep BCE spacing as wide as CE spacing. If labels crowd together, move their text above or below the line. Moving the date marks would change the scale.

Show events side by side

Parallel timelines share one scale but show different places on separate lines. The Han dynasty ruled China from 206 BCE to 220 CE. Its line overlaps the late Roman Republic and early Roman Empire. These societies existed at the same time; they did not take turns.

A timeline also changes our sense of distance. Cleopatra died in 30 BCE, about 2,530 years after the Great Pyramid was built around 2560 BCE. The first Moon landing in 1969 came 1,998 years after her death. She lived closer to the Moon landing than to the pyramid's construction.

Use order to check explanations

A cause must come before its effect. If a claim reverses that order, the timeline reveals the problem. But an earlier event still needs an explained link before you call it a cause.

A blank stretch on a timeline means no events are shown there. Its maker may have selected only a few events, or fewer sources may survive from those years.

Historians divide the past into periods to make patterns easier to study. Periodization means making these named stretches of time. A period groups chosen shared features; it is a tool for organizing history.

Notice what the name groups

Names may focus on tools, rulers, or ways of living.

Christian Jürgensen Thomsen developed the Stone–Bronze–Iron scheme in the early 1800s. These labels were created long after the people they describe had lived.

Prehistory is the time before written records in a place. Writing appeared in Mesopotamia and Egypt by about 3200 BCE, and later elsewhere. Prehistory therefore ends at different dates in different places. Archaeology and oral traditions still provide evidence for that time.

Compare places carefully

The Bronze Age began in parts of Southwest Asia around 3300 BCE. In Britain it began around 2500–2000 BCE. The same period name does not promise the same dates everywhere.

Ötzi lived around 3300 BCE in Europe's Copper Age. In parts of Europe, this describes the time between the Stone Age and Bronze Age when copper tools had begun to appear.

European labels also have limits. “Medieval” was created to describe Europe's past. China's history is often grouped by dynasties; West African history can be grouped by empires such as Mali and Songhai.

Ask what a boundary marks

The year 476 CE often marks the end of ancient history in Western Europe. A western emperor was removed then. The Eastern Roman Empire continued until 1453, and most western people's daily lives did not change overnight.

Period names can carry judgments. Later Italian scholars described the centuries after Rome as “dark.” Many historians avoid “Dark Ages” because it hides achievements and reflects those later writers' views.

Keep things in their own time

An anachronism puts something in the wrong time. A film showing Caesar checking a mechanical clock is an example: he died in 44 BCE, while mechanical clocks appeared in Europe in the late 1200s CE.

Thinking can also be anachronistic. Explaining an ancient choice by knowledge people gained much later gives its makers information they did not have.

A cause helps make an event happen. Historical events usually have several causes. Explaining them means showing the links between people's choices and the conditions they faced.

Sort the causes

Long-term causes build over years. Short-term causes develop shortly before the event. A trigger is the final event that sets things off. The last cause in time is not always the most important.

Causes also have different types. Political causes involve power, rulers, wars, and laws. Economic causes involve money, food, taxes, and trade. Social causes concern how people live together. Beliefs can be religious or cultural causes. Climate and disease are environmental causes; new tools are technological causes.

A cause may fit more than one type. Sorting is a way to notice the range, not a reason to force every cause into one box.

Follow Rome's weakening position

The Western Roman Empire was large and costly to defend. Economic troubles made paying for defense harder. Civil wars between rival emperors used resources and weakened armies. These were long-term pressures.

After 395 CE, the empire remained divided into eastern and western halves. The West relied increasingly on soldiers from Germanic peoples. Visigoths, Vandals, and other groups settled within the empire, and Rome was sacked in 410 and 455 CE.

In 476 CE, Odoacer removed the young emperor Romulus Augustulus and appointed no replacement. This final event marked the end of western imperial rule, but it does not explain the earlier weakening by itself.

Turn a list into an explanation

Link the causes step by step:

1. Civil wars weakened the army.
2. A weaker army struggled to stop invasions.
3. Lost land meant lost tax income.
4. Less income made the army harder to pay.

The links show how one problem made another worse. “There were wars, invasions, and money problems” names causes but leaves the process unexplained.

Include choices and judge importance

Agency means people's power to choose and act. Conditions such as low income limited Roman rulers, but rulers and generals still made decisions. Good explanations show both.

To judge importance, ask which cause affected the others. Would invasions have had the same effect on a well-paid, united army? Use evidence to support your judgment, and consider what a rival explanation explains well.

Something happening first is only the start of a causal argument. You also need to show how it helped produce the outcome. People at the time faced choices without knowing how the story would end.

A consequence is a result of an action or event. Some results appear quickly; others last for generations. To explain a consequence, show how the action led to it.

Separate timing from intention

Short-term consequences happen soon. Long-term consequences last, or appear much later. Intended consequences are results the people taking an action wanted. Unintended consequences are results they did not mean to bring about.

Someone can foresee a risk without wanting it. For example, a ruler may expect resistance to a tax but still seek more income. Resistance is unintended from that ruler's point of view, even if it was a known risk.

Follow the results of Qin rule

Qin Shi Huang united China in 221 BCE. He made writing, coins, weights, measures, and cart-axle widths the same across his empire. Common systems helped officials rule, collect taxes, and move supplies. Those were intended results.

Shared writing also helped later dynasties hold a large and varied territory together. This was a lasting consequence that continued beyond Qin rule.

Large building projects, including roads, walls, and the emperor's tomb, demanded heavy taxes and forced labor. The demands caused anger. After the emperor died in 210 BCE, rebellions broke out, and the Qin dynasty fell in 206 BCE. The ruler had aimed to strengthen his empire, but the anger helped undermine it.

Connect one result to the next

Anger was a consequence of the demands. It then became a cause of rebellion. The rebellions helped lead to the rise of the Han dynasty. An event can be a result when looking backward and a cause when looking forward.

A useful sentence pattern is: “Because …, …, which meant that ….” Fill each link with evidence. A later event belongs in the chain only when you can explain the connection.

Ask who gained and who lost

Rome's conquest of Britain began in 43 CE. Roads, towns, and trade benefited Romans and some wealthy Britons. Other people faced seized land, heavy taxes, and the crushing of revolts.

Calling conquest simply “good for Britain” blends together different lives. Ask about each group's experience and about different timescales. An immediate loss for one family and a later gain for a trader can both be consequences of the same event.

Change means becoming different over time. Continuity means staying the same. Both can happen together: a new ruler may take power while people keep farming the same fields.

Make the comparison precise

Compare the same feature before and after. Then ask:

• Pace: How quickly did it change?
• Extent: How much changed, and how many people were affected?
• Direction: What became better or worse, and for whom?

“Life changed” is too broad. “Royal burials shifted from pyramids to rock-cut tombs” identifies a feature you can compare with evidence.

Follow a gradual revolution

Farming began in Southwest Asia around 10,000 BCE. People grew crops, kept animals, and many settled in villages. This changed how they obtained food and where they lived.

The changes spread over thousands of years. Hunting, fishing, and gathering continued alongside farming. Many regions kept hunter-gatherer ways of life. Despite its name, the Neolithic Revolution was gradual and uneven.

More food from the same land was an important gain. Yet many early farmers' skeletons show poorer diets and more disease than earlier hunter-gatherers'. Whether this was progress depends on what you measure. More food and better health are different tests.

Recognize continuity and turning points

Ancient Egypt had pharaohs, many gods, and life shaped by the Nile's yearly flood for about 3,000 years. Within that long pattern, capitals moved and royal burials changed. Continuity describes a feature that lasted, not a society without change.

A turning point marks a major shift in the direction of change. Augustus becoming Rome's first emperor in 27 BCE is often used to mark the shift from Republic to Empire. The Senate continued to meet. The change in rule did not erase every older institution.

To support a turning-point claim, compare before and after. Explain the feature that changed and how far the shift reached.

Compare groups at the same time

Similarity and difference compare places or groups living at the same time. In the 100s CE, Rome probably had about a million people. Most people in Roman Britain lived in small farming settlements. They shared an empire, but not the same daily life.

Keep this comparison separate from change over time. Two places differing in one century shows variety within that century; it takes evidence from different times to show change.

Historical significance is the importance we give to a person, event, place, or development. It is a judgment supported by evidence. Fame alone does not explain why something matters.

Choose criteria for importance

A criterion is a test used to make a judgment. Five useful tests are often called the “5 Rs”:

• Resulting in change: Did it cause deep, widespread, or lasting effects?
• Remarkable: Did people notice it at the time or later?
• Remembered: Is it commemorated, celebrated, or debated?
• Resonant: Does it connect with people's concerns today?
• Revealing: Does it help us understand the past?

An object can reveal much without causing a large change. A ruler can be remembered without having improved people's lives. The tests help explain the kind of importance you mean.

Build a judgment about writing

Writing appeared in Mesopotamia by about 3200 BCE. It allowed people to keep records and create laws, letters, and literature. Surviving clay tablets reveal trade, taxes, and daily life in Sumerian cities.

Apply two criteria. First, writing resulted in lasting change because information could be recorded and kept. Second, it is revealing because tablets let historians study activities that would otherwise be harder to recover.

A supported judgment might be: “Writing was highly significant for Mesopotamian cities. It changed record-keeping and left evidence of trade and taxes.” The specific effects do more work than simply calling writing “very important.” Writing was also invented independently in other places, including China and Mesoamerica.

Say for whom and when

Rome's conquest of Britain mattered greatly to people whose land and rule changed. For many people elsewhere in the empire, it was a distant frontier war. The group being considered changes the judgment.

Importance can change with new evidence and new questions. Ötzi was unknown for over 5,000 years. Since his discovery in 1991, his remains have become important evidence of Copper Age life. His value to historians comes largely from what he reveals.

A small find can therefore be significant. A single letter may reveal a voice rarely preserved elsewhere. A large battle may have fewer lasting effects than its size suggests. When making a judgment, name the people concerned and apply at least two criteria with specific evidence.

People in the past acted with the knowledge, beliefs, and choices available to them. A historical perspective is how a person or group saw their world from that position.

Reconstruct the context

Context means the surrounding time, place, beliefs, and circumstances. Ancient Egyptians preserved bodies and placed goods in tombs because they believed these were needed in the afterlife. That belief helps explain choices that may seem strange today.

Historical empathy means understanding a past situation from the inside, using evidence. It differs from sympathy, or feeling sorry for someone. Understanding a person's reasons does not require approving their actions.

Presentism means judging the past only through today's knowledge and values. For example, people who lacked knowledge of germs could not choose treatments using modern germ theory. Their knowledge was different; that is not evidence that they were less intelligent.

Compare positions within one society

Athens in the 400s BCE allowed adult male citizens to speak and vote in its assembly. For them, democracy meant taking part in government. Women, enslaved people, and foreign residents could not vote.

The same political system offered different opportunities to these groups. Saying “the Athenians could vote” hides those differences. A more accurate statement identifies which Athenians had that power.

Position helps explain a perspective, but people within a group can still disagree. Evidence is needed for a claim about what a particular person thought or felt.

Read a conflict from more than one side

During Boudica's revolt in 60–61 CE, Roman officials saw rebellion against their rule. Tacitus's account describes the seizure of Iceni land and the violent treatment of Boudica and her daughters. These help explain why many Britons resisted.

Most surviving written evidence comes from Roman writers. That means we often learn about Britons through outsiders' accounts. We can reconstruct parts of their situation, while recognizing the gaps in their own surviving words.

Keep empathy tied to evidence

A strong explanation names a belief or circumstance, gives supporting evidence, and links it to an action. “Egyptians supplied tomb goods because they believed the dead needed them” makes that link.

Inventing an ancient person's private feelings adds a story the evidence may not support. Ask whose viewpoint appears in a source, whose is missing, and what evidence could help recover another perspective.

An interpretation is an account or explanation of the past made afterward. Books, museum displays, films, and monuments all select parts of the past and give them meaning.

Ask why the accounts differ

Writers may ask different questions, choose different sources, or measure different kinds of change. Their own time, values, purpose, and audience also affect what they emphasize.

History-writing has developed in many cultures. Herodotus wrote about Greek and Persian wars in the 400s BCE. Sima Qian completed his account of China's past around 94 BCE. Roman writers such as Livy and Tacitus used history to consider good and bad leadership. Each wrote from a particular setting.

Work through a disagreement

Edward Gibbon's history, published in 1776–1789, explained Rome's decline through invasions, loss of civic spirit, and Christianity. His explanation reflected concerns among thinkers of his time.

From the 1970s, Peter Brown emphasized the Roman world's gradual transformation into new societies. Bryan Ward-Perkins, writing in 2005, used archaeology to argue for a sharp fall in western living standards.

Brown's focus on changing society differs from Ward-Perkins's focus on material living conditions. To compare them, ask what each measures and which evidence supports it. Disagreement need not mean that someone is lying.

Test an interpretation

Ask who made it, when, why, and for whom. Identify its evidence. Check how well it explains the available clues and whether it leaves out important evidence. A film made for entertainment may choose a dramatic story over a careful reconstruction.

New methods can change the answer. Ötzi was first thought to be a modern climber, then an ancient traveler who died in bad weather. The arrowhead found in 2001 changed the explanation toward violent death. Revising the story was justified by a new clue.

A newer account still needs evidence. An older account may remain useful when its reasoning holds up. History can be contested while some claims are better supported than others.

Read public memory as an interpretation

In 1902, a bronze statue of Boudica was placed beside Westminster Bridge in London. It celebrated a rebel against Rome as a heroine of the British Empire. Even its chariot followed Roman designs.

The statue is a later image of Boudica, shaped by its makers' time. It is especially useful evidence of how people around 1900 chose to remember her.