Japan bombed Pearl Harbor. That incited the USA to declare war on Japan and Germany.
japan and Germany were allies (axis powers)
Pearl Harbor was the main reason the US joined the war. They declared war on Germany and Japan because Japan bombed Pearl Harbor, and Germany was Japan's ally.
Japan. Then Germany declared war on the US.
Mainly Pearl Harbor because Japan was an ally of Germany. After Pearl Harbor was bombed the US declard war on Japan and because they were allies Germany and Italy see it fit to declare war on the US.
The attack on Pearl Harbor caused the US to declare war on Japan and then Germany and Italy. 1,177 crewman died that day.
Shortly after the bombing of Pearl Harbor, in december of 1941.
after japan attacked pearl harbor and declared war on japan a German Allie
In response to Pearl Harbor, the president advised congress to declare war, which they did.
Germany declared war on the United States four days after the Japanese attacked Pearl Harbor - December 11, 1941.
transformed peacetime industries into war industries
Nothing. France was under Germany's authorities. And Germany was allied to Japan.