The US entered the war for a variety of reasons
Because they wanted to win !
The US wanted to free Cuba.
they wanted to help Britain and France as they were all allies and powerful countries, the us had the best weapons around and after the war France and Britain would have to pay the us a great deal of money for fighting in the war
WW I - Lusitania. WW II - Pearl Harbour.
The USA entered World War Two a day after the Japanese attacked the US navy base of Pearl Harbor in Hawaii on December 7, 1941. After declaring war on Japan, Germany declared war on the USA. Thus, the US entered a two front war.
The US entered the war on April 6,1917
yes, Britain entered the war at the beginning, the united Staes entered the war over two years later.
try this website http://www.conservapedia.com/Debate:Should_the_United_States_have_entered_World_War_II%3F
for about two years ( 1939 to 1941) the US entered war when japan bombed pearl harbor in Honolulu Hawaii. They entered in December 8 1941
1. Germans sank many of their merchant ships before the US entered the war with the their u-boats2. Germans sent a coded message to Mexico that urged Mexico to invade US that British code breakers cracked and sent to the US.
The allies entered the war in 1914; the US entered the war in 1917.