Conflict and tension, 1918-1939 Year Month What happened? 1918 11 November Armistice is signed, ending WW1 1919 June Treaty of Versailles is signed 1921 Poland invades Vilna; the Aaland Islands crisis 1923 August Corfu crisis 1925 October Greek-Bulgarian dispute Oct-Dec Locarno Treaties 1929 October Wall Street Crash leads to global recession 1931 September Mukden Incident; the Japanese army invades Manchuria 1933 January Hitler becomes Chancellor of Germany October Hitler leaves the League of Nations’ Disarmament Conference 1934 July The Nazi Party in Austria assassinates the Austrian Chancellor Dollfuss 1935 January The Saar Plebiscite March Hitler announces that he has built the Luftwaffe and that conscription will be introduced to build up the German army June Anglo-German Naval Treaty October Mussolini invades Abyssinia March Remilitarisation of the Rhineland October Rome-Berlin Axis is agreed November Anti-Comintern Pact between Germany and Japan is agreed March Hitler invades Austria to achieve Anschluss September Chamberlain meets Hitler to discuss the Sudeten crisis October German troops invade and occupy the Sudetenland August Nazi-Soviet Pact is signed September Hitler invades Poland; Britain and France declare war on Germany 1936 1938 1939