Question

why did USA enter the Second World War​

Answer 1

Answer:

World War II (1939-1945) was the largest armed conflict in human history. ... Although the war began with Nazi Germany's attack on Poland in September 1939, the United States did not enter the war until after the Japanese bombed the American fleet in Pearl Harbor, Hawaii, on December 7, 1941.

Answer 2

Answer:

The USA did not enter the Second World War until after the Japanese bombed the American fleet in Pearl Harbour Hawaii on December 7 ,1941