AP United States History Unit 7 Topic 3: World War I

What to Know

Use specific evidence to support a defensible historical claim.
Organize DBQ and LEQ evidence around an argument.
Show complexity with multiple causes, competing perspectives, or qualified change over time.
Always connect this topic back to the larger unit: Period 7: 1890-1945.

Detailed Notes

World War I should be studied as part of a larger historical process. Ask what came before, what changed, who was affected, and what evidence proves it.

In AP United States History, dates and names matter most when they support an argument. Tie specific facts to themes such as power, economics, culture, migration, technology, or social structure.

For AP writing, turn the topic into a claim. Then use evidence to explain causes, effects, comparisons, or continuities instead of simply narrating events in order.

Key Vocabulary

Contextualization

Explaining the broader historical setting of an event or development.

Causation

Explaining why historical events or changes happened.

Continuity and change

Identifying what stayed the same and what changed over time.

Primary source

Evidence created during the time period being studied.

Historical argument

A defensible claim supported by specific evidence and reasoning.

Quick Practice

How would you explain World War I in one or two AP-style sentences?

Name the concept, apply it to a specific example or source, and explain the reasoning that connects the evidence to your answer.