What was the main cause of the United States' decision to join World War II?(1 point)

Question

Responses

The sinking of the Lusitania
The sinking of the Lusitania

The Treaty of Versailles
The Treaty of Versailles

The attack on Pearl Harbor
The attack on Pearl Harbor

The bombing of Hiroshima and Nagasaki

Answer 1

The main cause of the United States' decision to join World War II was the attack on Pearl Harbor.