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.
The History Cat
The History Cat: Causes of World War I
Summarizes the major causes for the outbreak of World War I.
History of American Wars
History of American Wars: Causes of World War 1: (1914 1918)
A timeline showing the events between 1699 and 1914 that led to the outbreak of World War I, and one from 1915 to 1917 listing the events leading to America's involvement.
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.