Alpha Omega
History and Geography—Two World Wars
Here's a combination textbook/workbook that examines the conditions in Europe that lead to World War I. Ideal for homeschoolers as well as classroom use.
Wikimedia
Wikipedia: World War Ii
Visit this website from the Wikipedia encyclopedia for an exhaustive encyclopedia article on World War II. Content includes information on the causes of the war, the European theater, the Pacific theater, and the historical significance...
History of American Wars
History of American Wars: Causes of World War 2: (1939 1945)
A timeline showing the events between 1914 and 1939 that led to the outbreak of World War II, one from March to December of 1941 listing the events leading to America's involvement.