It was the unfinished business of World War I, which had been mistakenly called 'the war to end wars'. The influences were the usual suspects - those with self interest, self advancement and those with supposed national interest at heart. The victims were the hundreds of millions of soldiers and civilians who responded to or were forced to participate and suffer the consequences.
World War 2.
the Great Depression.
World War 2
some council
America joined because of Pearl Harbor.
To learn how propaganda influenced WW2, watch how it is influencing the forthcoming WW3.
Dropping nuclear bombs on Japanese cities Hiroshima and Nagasaki. This Influenced the Japs to surrender.
World war two.
Shel Silverstein was too young to participate in World War 2, but he did serve in the military later during the Korean War. His experiences in the military influenced some of his work, such as his book "The Giving Tree."
The end of world war 2, computers, television automobiles, economy, and technology
Of course his experiences in the underground shelters during World War 2.
World War II