Question

Why did the United States declare war in 1941?

The United States wanted to help the British war effort.

Germany had sunk US submarines in the Atlantic Ocean.

Japan had attacked a US military base in the Pacific Ocean.

The United States wanted to protect economic interests in Asia.

Answer 1

The answer above is correct! ;0

Step-by-step explanation:

Answer 2

the third option

Step-by-step explanation:

Japan attacked Pearl Harbor on Dec. 7, 1941, which caused the U.S. to enter the war