The document provides an overview of key facts about World War II. It notes that the war cost the US $330 billion, 10 times the cost of WWI. Around 50 million people died total in WWII, including 11 million in the Holocaust. The war began in 1939 with Germany invading Poland and ended in 1945 with the surrender of Germany and Japan. The Allied powers including the US, UK, France, and Soviet Union fought against the Axis powers of Germany, Italy, and Japan. Some major causes of WWII included the Treaty of Versailles, the worldwide depression, the rise of totalitarian regimes like Nazi Germany, and isolationist policies among the major powers.