When did America officially join ww2?
December 1941
Lend-Lease and Military Aid to the Allies in the Early Years of World War II. During World War II, the United States began to provide significant military supplies and other assistance to the Allies in September 1940, even though the United States did not enter the war until December 1941.
Why did the US wait to get involved in ww2?
The urgency of the situation intensified the debate in the United States over whether American interests were better served by staying out or getting involved. Isolationists believed that World War II was ultimately a dispute between foreign nations and that the United States had no good reason to get involved.
