2: The U.S. got involved for a couple reasons. One was that the U.S. provided millions of dollars in weapons. Another reasons was that Japan attacked Pearl Harbor without any declaration or warning of war.
3: The U.S. got involved with the war on December 7, 1941. And we left on August 15, 1945.
4: Hitler wanted to rule the world. So he set out invading neighboring countries.
5: Germany, Italy, Japan, Finland, Hungary, Romania, Bulgaria, Croatia, Slovakia, England, Great Britain, U.S., USSR, Russia, France, Canada, Australia, China, Poland, Greece, Netherlands, Belgium, Czechoslovakia, Luxembourg, Norway, and Yugoslavia were all involved in WWII.
9: There were many weapons used durning WWII. Here are just a few; tanks, automobiles, air crafts, different variety of guns and rifles, U-boats, destroyers, cruisers, convoys, air craft carriers, radar, grenades, flamethrowers, chemical gas, swords and knives, V1 and V2 missiles, cannons, mines, and atomic bombs.
10: Rosie was a hugh significance to American women employed in war material manufacturing durning World War II. She encouraged women to fill in for men who were fighting in the War II.
11: WWII helped end the Great Depression because in a war you need many supplies. Since they needed so many supplies to fight in the war they would need more people to make the supplies. So more people got jobs again and so America got out of the depression.