There was no single event, it was a chain of events.Here is the sequence of events:
Pearl Harbor which happened on December 7, 1941 is what brought the US into World War 2 and why it declared war on Japan and Germany.
The japanese attack on Pearl Harbor
Japan germany and italy
The three main axis powers in World War 2 were Germany, Italy and Japan.
JIG Japan, Italy, Germany
Germany, Japan, and Italy
Italy and Germany were two of the Axis Powers. The US was one of the Allies.
Germany, Italy, and Japan
Axis powers .
in 1942
Germany, Japan and Italy.
Japan germany and italy
Axis Powers .
The three main axis powers in World War 2 were Germany, Italy and Japan.
JIG Japan, Italy, Germany
Germany, Japan and Italy
Germany, Japan, and Italy
Germany, Italy and Japan
Italy and Germany were two of the Axis Powers. The US was one of the Allies.