Question

When did the United States enter World War II?

Answer 1

on 8 December 1941

USA entered in war because on 7 December 1941 Japan attack the pearl Harbor where many people and soldiers died. to take revenge USA entered

Answer 2

Heyaa☺

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➡The United States entered world war-2 in 1941 to take an action or attack on Japan.

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Hope it helps..✌