Causes of World War 2 By facebooker_100000573311215 Period: Nov 11, 1918 to Sep 1, 1939 WW1 ended and the causes of WW2 Apr 28, 1919 League of Nations founded. Jun 28, 1919 The Treaty of Versailles signed by Germany Jul 29, 1921 Adolf Hitler became the leader of Nazi Party Jul 18, 1925 Hitler's book "Mein Kampf" published. Sep 8, 1926 Germany admitted to League of Nations Sep 14, 1930 Germans elect Nazis making them the 2nd largest political party in Germany Jan 30, 1933 Adolf Hitler becomes Chancellor of Germany Mar 23, 1933 Enabling Act gives Hitler more power May 10, 1933 Nazis burn books in Germany Jul 14, 1933 Nazi Party declared Germany's only political party Oct 14, 1933 Germany quits the League of Nations Jul 25, 1934 Nazis murder Austrian Chancellor Dollfuss Aug 2, 1934 German President Hindenburg dies Aug 19, 1934 Adolf Hitler becomes Führer of Germany Mar 7, 1936 German troops occupy the Rhineland Nov 5, 1937 Hitler reveals war plans during Hossbach Conference Mar 12, 1938 Germany announces union with Austria Sep 30, 1938 British Prime Minister Chamberlain appeases Hitler at Munich Oct 15, 1938 German troops occupy the Sudetenland Sep 1, 1939 Invasion of Poland and World War 2 begins