Which event that led the united states into world war ll happened last a.) the axis powers invaded france b.) japan attacked pearl harbor c.) the united states sent military aid to great britain d.) germany and italy declared war on the united states.

B. Japan attacked Peal Harbor

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 inPearl Harbor, Hawaii, on December 7, 1941.

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