• 28.10.1918 - foundation of an independent state of Czechs and Slovaks • 1920 - the first Contitution when was Czechoslovakia set as parliamentary democracy • 1918-1938: a democratic republic • september 1938 - France and the United Kingdom yielded to Nazi pressures at Munich and agreed to force Czechoslovakia to cede the Sudetenland to Germany. • 1938-1939: after annexation of Sudetenland by Germany in 1938 gradually turned into a state with loosened connections between Czech, Slovak, and Ruthenian parts