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.

the third option

Explanation:

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

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

Explanation:

Otherwise known as Pearl Harbor. Occured on December 7th, 1941. This event is what led the US to get involved in WW2

an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.

assessment is the missing word