The entry of the United States into World War I affected the war's outcome profoundly: the additional naval, air, and especially ground unit entering the conflict gave the western allies a clear advantage over German forces. It can safely be said that the American contribution not only hastened the end of the war; it ensured it.
The size and enthusiasm of the American forces bolstered the French and British.
Declared war with Japan, effectively entering them into WWII.
stop
the bombing of Pearl harbour on Dec.7th 1941
Both were subjected to unprovoked attack, The USSR by Germany and the US by Japan.
It became more peacful.
they guns
the pacifists
Pearl Harbour
because were idiots son!
england
Germany
Jeannette Rankin - she voted no in both World Wars .
Because it didn't want to enter a European war
Sinking of the U.S. vessel the Lusitania
The US felt Europe should handle Europe's problem.
for plato users its NOT c
Declared war with Japan, effectively entering them into WWII.