The world experienced a decade of aggression in the 1930s that would culminate in World War II. This second world war resulted from the rise of totalitarian regimes in Germany, Italy, and Japan. These militaristic regimes gained control as a result of the great depression experienced by most of the world in the early 1930s and from the conditions created by the peace settlements following World War I. The dictatorships established in each country encouraged expansion into neighboring countries. In Germany Hitler strengthened the army during the 1930s. In 1936 Benito Mussolini's Italian troops took Ethiopia. From 1936 to 1939 Spain was engaged in civil war involving Francisco Franco's fascist army, aided by Germany and Italy. In March 1938 Germany annexed Austria and in March 1939 occupied Czechoslovakia. Italy took Albania in April 1939. One week after Nazi Germany and the U.S.S.R. signed a Treaty of Nonaggression, on...