Czechslovakia Timeline By JDizzle41 Oct 28, 1918 Czechoslovakia Gains Independence Nov 3, 1918 World War I Ends as Germany Surrenders Mar 4, 1919 50 German Demonstrators Killed by Czech Legions Mar 28, 1920 Thomas Masaryk Elected President of Czechoslovakia Jun 4, 1920 Treaty of Trianon Gives Czechoslovakia part of Hungary Aug 10, 1920 Poland, Czechoslovakia, and Romania are Allies Mar 12, 1938 Hitler Invades Austria Apr 23, 1938 Sudeten Germans in Czechoslovakia want Self-Government Sep 1, 1938 Adolf Hitler Gains the Right to Invade Czechoslovakia's Borders Sep 29, 1938 Munich Agreement Signed, Giving Hitler Czechoslovakia's Sudetenland Oct 20, 1938 Germany Annexes Sudetenland Mar 14, 1939 Republic of Czechoslovakia dissolved Mar 15, 1939 Adolf Hitler Invades Czechoslovakia Sep 1, 1939 World War II Begins Nov 24, 1939 Gestapo Executed 120 Students Accused of Anti-Nazi Plotting in Czechoslovakia Jan 1, 1942 Slovene Covenant Created Period: Jan 1, 1945 to Dec 31, 1989 Communist Era May 5, 1945 Prague Uprising Aug 1, 1945 U.S Drops Atomic Bombs on Hiroshima and Nagasaki. which ends World War II Period: Aug 21, 1968 to Nov 1, 1989 Soviet Troops Occupy Czechoslovakia Period: Jan 1, 1980 to Nov 1, 1989 Mikhail Gorbachev Introduces the Russian Perestroika, Last Years of Communism Nov 1, 1989 Velvet Revolution Ends Communism in Czechoslovakia Jan 1, 1993 Czechoslovakia splits into Czech Republic and Slovakia