What event directly led to US entry into World War II?

A The sinking of the Lusitania

B The attack on Pearl Harbor (December 7, 1941)

C The invasion of Poland

D The fall of France

✓ Correct Answer: Option B

Japans surprise attack on Pearl Harbor prompted Congress to declare war, bringing the US into WWII.

💡 Why is B) the correct answer?

The correct answer to the question "What event directly led to US entry into World War II?" is Option B: The attack on Pearl Harbor (December 7, 1941).

The other options — A) The sinking of the Lusitania, C) The invasion of Poland, D) The fall of France — are incorrect for this AP Exam Prep question. As explained above: Japans surprise attack on Pearl Harbor prompted Congress to declare war, bringing the US into WWII.

📚 About This AP Exam Prep Practice Question

This 1-level AP Exam Prep question from the AP US History topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free AP Exam Prep practice test or use flashcards for spaced repetition review.

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What event directly led to US entry into World War II?

✓ Correct Answer: Option B

📚 About This AP Exam Prep Practice Question

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