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.

Respuesta :

Answer:

the third option

Explanation:

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

Answer:

The answer above is correct! ;0

Explanation: