The Lusitania and the Zimmerman Note
the catylist that caused America to enter world war two was the bombing of pearl harbour.
To help out other countries
Hitler was not in world war one, he was the leader of the Germans in world war two.
Two reasons for the higher number of deaths in World War II compared to World War I were the increased use of advanced weaponry, such as tanks and aircraft, and the widespread targeting of civilians in bombing raids.
tu madre
Yes they were in world war two, but they lost against USA.Well actually they didnt lose but they gave up because they were losing too many people.
US got in the war because of the bombing in pearl harbor.
Pearl Harbor
One of the main reasons the US entered World War I on the side of the allies was because the Germans had sunk the Lusitania, a passenger ship containing many Americans.
Technically, the Russian Empire fought in World War One, while the U.S.S.R. fought in World War Two. In both wars, it fought on the side of the Allies.
To prevent the spread of communism