Welcome to the Detective Work of History!
In AP United States History (APUSH), you aren't just memorizing dates and names. You are becoming a historical detective. This chapter focuses on Skill 3: Claims and Evidence in Sources. Think of this as the "How do we know what we know?" part of the course. Whether you are looking at a speech by George Washington or a chart about the Great Depression, you need to figure out what the author is trying to say and how they are trying to prove it.
Don't worry if this seems a bit academic at first! By the end of these notes, you’ll have a clear toolkit to handle any source the exam throws at you.
3.A: Identifying the Claim (The "What's Your Point?" Skill)
The first step in analyzing any source—whether it’s a text, a map, or a political cartoon—is to find the claim (also called an argument). A claim is not just a fact; it is a statement that someone is trying to prove.
How to spot a claim:
- Look for the "Because": A claim usually implies a "why" or a "how."
- Is it debatable? If everyone agrees it’s a simple fact (like "the Civil War happened"), it’s not a claim. If it says "the Civil War happened primarily because of economic differences," that is a claim.
- Check the main idea: For a non-text source (like a graph), the "claim" is the trend the data shows. For example, a chart showing rising immigration in the 1890s is making a claim about urbanization and industrialization.
Quick Review: To "describe" a claim, you don't just quote it. You put it into your own words to show you understand the author's message.
3.B: Identifying Evidence (The "Backup" Skill)
A claim without evidence is just an opinion. Evidence is the information used to support or "beef up" an argument. On the AP Exam, you will be asked to find exactly what pieces of information a writer uses to make their case.
Types of evidence you might see:
- Facts and Statistics: Data about trade, population growth, or election results.
- Historical Events: Mentioning specific moments, like Metacom's War or the Seneca Falls Convention, to prove a point about conflict or reform.
- Quotes or Logic: Using the words of other famous people (like Thomas Paine or Abraham Lincoln) to add authority to an argument.
Key Takeaway: Always ask yourself, "What specific facts did the author include to make me believe their claim?"
3.C: Comparing Arguments (The "Side-by-Side" Skill)
In Section I (Multiple Choice) and Section I, Part B (Short Answer), you will often be given two different sources and asked to compare them. This is where things get interesting!
How to compare two sources:
- Find the Common Ground: Are they talking about the same topic (e.g., the Constitution or Imperialism)?
- Identify the Conflict: Do they disagree on the cause? (e.g., One says the Great Depression was caused by the stock market crash, while the other blames bank failures).
- Look at the Tone: Is one source optimistic while the other is critical?
Did you know? At least one set of paired stimuli (two sources together) will appear in either your Multiple Choice or Short Answer questions. Practicing comparisons is a guaranteed way to pick up points!
3.D: Supporting, Modifying, or Refuting (The "Connection" Skill)
This is the highest level of this skill. You need to explain how a new piece of evidence or a claim relates to an existing argument. Think of this as a conversation between historians.
The Three Ways to Respond:
- Support: The new evidence provides more proof that the original claim is correct. ("This chart of assembly line production supports the argument that technological innovation grew the economy in the 1920s.")
- Modify: The new evidence shows the original claim is mostly right, but needs a small change or a "Yes, but..." ("The success of the Market Revolution modified the idea that all Americans benefited equally, as it created new social classes.")
- Refute: The new evidence proves the original claim is wrong. ("The Pueblo Revolt refutes the idea that Native Americans always accepted Spanish colonial rule without resistance.")
Pro-Tip: Use these specific words—support, modify, refute—in your Short Answer and DBQ responses. It tells the grader exactly what you are doing!
Quick Summary for Exam Day
Remember that Skill 3 is all about the relationship between the Point and the Proof.
- Skill 3.A: What is the author's main argument?
- Skill 3.B: What facts/data did they use as backup?
- Skill 3.C: How do two different authors' points compare?
- Skill 3.D: Does new information back up (support), tweak (modify), or disprove (refute) the argument?
Common Mistake to Avoid: Don't just summarize the document! The exam wants you to analyze. If you find yourself just saying "The document says X," stop and ask yourself, "Why is the author saying X, and what are they using to prove it?"
Next Steps in Your Studies:
To see how these skills apply to specific tasks, check out our chapters on "Sourcing and Situation" (to see why a claim was made) and "Document-Based Question and Long Essay Craft" (to practice writing your own claims!).