AP European History Claims and Evidence in Sources is the historical thinking skill where you read a source, figure out what argument it makes, and analyze how the source backs up that argument. You work with both primary sources from the time period and secondary sources written by historians, and you handle text sources like letters and speeches plus non-text sources like charts, paintings, and political cartoons.

In short, this skill asks you to answer three questions about any source: What is it claiming? What evidence does it use? How does that evidence connect to other arguments or sources? You will use it on the multiple-choice section, the short-answer questions, and the document-based question.

What Claims and Evidence in Sources Means

A claim is the main point or position a source is trying to convince you of. An argument is the claim plus the reasoning the author uses to support it.

Evidence is the specific information a source uses to back its claim. That can be examples, data, comparisons, references to events, or appeals to authority.

This skill lives under the larger goal of analyzing arguments in primary and secondary sources. You are not just summarizing what a source says. You are breaking it down to see what position it takes and how well it holds up.

Two source types you will see:

Text-based: letters, sermons, speeches, treaties, laws, excerpts from history books
Non-text-based: tables, graphs, maps, paintings, cartoons, photographs

What This Skill Requires

To work this skill well, you need to do four things consistently:

Pin down the main claim, not a minor side point
Locate the actual evidence the author uses, not just the topic
Compare two sources to see where their arguments agree, differ, or partly overlap
Explain relationships between claims and evidence, including how new information would support, change, or knock down an argument

You do this without relying on outside opinion. Start with what the source actually says or shows.

Subskills You Need

3.A: Identify and describe a claim or argument

Find the central position of a text or non-text source and put it in your own words. Watch for signal language like "it is not right when," "the true measure of," or "we must."

Example from a 1516 sermon by Catholic theologian Johannes von Staupitz: the main claim is that forgiveness of sins depends on genuine repentance, not on paying money for an indulgence. Notice he says "the clink of the coin that falls into the money box will not free the sinner of his sins." That line points straight at his claim.

3.B: Identify the evidence used to support an argument

Once you have the claim, ask what the author uses to support it. In a 1789 letter from a Spanish government official, the writer argues Spain should focus on its domestic economy rather than risky foreign trade. The evidence includes the loss of Flanders and Italy and the example of "little Prussia," a medium-sized kingdom that thrived without large overseas colonies.

For non-text sources, evidence is the data itself. In a table comparing stonemason wages and wheat prices in Antwerp from 1491 to 1600, the numbers showing wages falling behind prices are the evidence.

3.C: Compare the arguments or main ideas of two sources

Look at two sources side by side and state how their main ideas relate. They might fully agree, fully disagree, or share part of a view while differing on the rest.

Useful comparison moves:

Both authors argue X, but they differ on the cause
Source 1 supports a reform while Source 2 defends tradition
One uses economic evidence and the other uses religious evidence to reach a similar conclusion

3.D: Explain how claims or evidence support, modify, or refute an argument

This is the explaining step. You connect a piece of evidence to an argument and say what it does to that argument.

Support: the evidence makes the claim stronger
Modify: the evidence adds a condition or limit, so the claim needs adjusting
Refute: the evidence works against the claim

Example: a fact that the Antwerp stonemasons' guild was unusually powerful and often won higher wages would modify any broad conclusion about how all sixteenth-century workers fared, because that guild may not represent typical workers.

How It Shows Up on the AP Exam

All four subskills apply to both multiple-choice and free-response questions.

Multiple-choice: A question may ask you to pick the answer that "best describes the main claim" of a passage. With the von Staupitz sermon, the correct answer was that forgiveness depends on repentance rather than payment. Wrong answers either overstate the point or describe a claim the author never makes.

Short-answer questions: The first short-answer question uses one or more secondary sources, and the second uses a primary source. You will often describe an author's argument, identify evidence, or compare two historians' interpretations.

Document-based question: You read seven documents, analyze the claims and evidence in each, and use them to build your own argument. Comparing documents and explaining how their evidence supports a position is the core of the DBQ.

Practical tip: in multiple-choice, read the quoted source before the answer choices. Decide the claim in your own words first, then match it to an option.

Examples Across the Course

These show the skill working in different periods and source types.

Age of Reformation, religious sermon (1516): Johannes von Staupitz argues that contrition, not coins, brings forgiveness. The claim is religious, and the evidence is theological reasoning about God's mercy. This connects to the questioning of Catholic doctrine in the early sixteenth century.
Renaissance and Reformation era, economic data table (1491 to 1600): An indexed table of Antwerp stonemason wages and wheat prices makes a non-text argument about worker living conditions. Evidence is the gap between rising prices and lagging wages, tied to the growth of the money economy.
Late eighteenth-century states, government letter (1789): An anonymous Spanish official argues Spain should prioritize its domestic economy over risky overseas trade. Evidence includes lost territories and Prussia's success without large colonies, a reference to eighteenth-century conflicts like the Seven Years' War.
Secondary source comparison on the DBQ or short-answer: Two historians may offer different interpretations of the same development, such as the causes of World War I or the effects of industrialization. Your job is to state how their main ideas line up or clash.

Notice how the skill stays the same even when the topic, country, and source type change.

How to Practice Claims and Evidence in Sources

Summarize the claim in one sentence before reading the questions or writing about a source.
Underline evidence words like "for example," dates, place names, and numbers.
Label each piece of evidence as support, modification, or refutation of the claim.
Pair two documents and write one sentence on how their arguments relate.
Practice with non-text sources by reading a table or cartoon and stating its claim out loud.
Use past free-response prompts and the von Staupitz, Antwerp, and Spanish letter style sources to rehearse identifying claims fast.

Common Mistakes

Summarizing instead of analyzing. Saying what a source talks about is not the same as stating its claim.
Confusing topic with claim. "This passage is about indulgences" is a topic. The claim is the position the author takes on indulgences.
Listing evidence without connecting it. You must show how the evidence supports, changes, or undercuts the argument.
Picking the most extreme answer choice. In multiple-choice, the strongest-sounding option is often an overstatement the source never makes.
Ignoring non-text sources. Tables, maps, and cartoons make arguments too, and the data is your evidence.
Treating two sources as identical or opposite by default. Many comparisons are partial, with overlap on some points and disagreement on others.

Quick Review

3.A: Identify and describe the main claim or argument in a text or non-text source.
3.B: Find the specific evidence the source uses to support that claim.
3.C: Compare the main ideas or arguments of two sources.
3.D: Explain how claims or evidence support, modify, or refute an argument.
Claim is the position, evidence is the support, and analysis is the link between them.
The skill applies to multiple-choice, short-answer, and the DBQ, across every time period and both text and non-text sources.
Always state the claim in your own words first, then track the evidence.