As european became involved in ww2 the united states was ?

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.

hello,

your answer whould be d

it affected it because the kingdoms (with trade) slowly got richer and richer.