Officially, bombing by Japan on American Naval fleet at Pearl Harbor in 1941. Unofficially, the President was supplying aide to Great Britain with arms, supplies to fight the Nazi's in 1940 although we kept the stance we were neutral for public appearances.
Both ships were the catalyst that brought the US into war. The sinking of the USS Maine brought us into the Spanish American War. And the Lusitania brought us into World War 1.
the resumption of restricted sub-warfare brought the us into world war 1.
The Japanese Attack on Pearl Harbor brought us into WWII
The attack on Pearl Harbor by the Japanese brought the US into World War Two.
The French?
I really don't know
The Cuban Missile Crisis brought the US and Soviet Union to the brink of war in 1962.
It brought the US into the war
Franklin Delano Roosevelt and World War II brought us out of the Great Depression.
The Japanese
It brought the US into the war.
The US brought many drafted men and supplies to help the allies. We won the war shortly after starting there.