The document outlines the major events leading up to World War II, including Hitler rising to power in Germany in 1933, remilitarizing the country in violation of the Treaty of Versailles, annexing Austria and Czechoslovakia, signing a non-aggression pact with Stalin, and invading Poland in 1939 which marked the beginning of World War II in Europe. It then describes Germany's quick conquest of Western European countries in 1940 and Hitler's fateful decision to launch an invasion of the Soviet Union in 1941.