The US was in a depression from 1929-1941 until they entered the war. Germany’s plans to take over the oil in the middle east. Access of raw materials. Japan invaded Manchuria. Americas economy continued to boom Unlike the US Germany’s economy laid in shambles Germany wanted to dominate Europe Japan wanted to take over Asia, especially China Italy wanted to dominate the Balkans and a few other areas Fear of the spread of communism Mussolini of Italy desired making a new roman empire. Hitler had an idea of restoring Germany’s rightful boundaries Churchill of Britain doubled the number of anti-aircraft guns Air attacks began to only happen at night. Bombs often killed people they didn’t hit by sucking all the air out of their lungs Most common US aircraft Most common Soviet aircraft. http://www.americaslibrary.gov/jb/wwii/jb_wwii_subj.html http://www.worldsocialism.org/articles/economic_causes_ of_war.php http://economics.about.com/od/useconomichistory/a/pos t_war.htm http://www.econlib.org/library/Enc/GermanEconomicMira cle.html http://en.wikipedia.org/wiki/Causes_of_World_War_II http://www.historylearningsite.co.uk/impact_blitz_london. htm