Why did German ships begin to attack U.S. ships in 1941 before the Japanese attack on Pearl Harbor?

Question

(1 point)
Responses

Germany wanted to weaken the United States.
Germany wanted to weaken the United States.

Germany declared war on the United States.
Germany declared war on the United States.

The U.S. disagreed with Nazi expansion and values.
The U.S. disagreed with Nazi expansion and values.

The U.S. supplied war materials to enemies of Germany.

Answer 1

The U.S. supplied war materials to enemies of Germany.