What prompted the United States to join the fighting in World War I?

Question

Responses

an attack on Pearl Harbor

an attack on Pearl Harbor

the sinking of American ships in the Pacific

the sinking of American ships in the Pacific

the assassination of an archduke

the assassination of an archduke

the sinking of American ships in the Atlantic

Answer 1

The sinking of American ships in the Atlantic prompted the United States to join the fighting in World War I.