Czechoslovakia (Československo; from 1990 Slovak: Česko-Slovensko) was a sovereign state in Central Europe that existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until 1992. From 1939 to 1945 the state did not have a de facto existence, due to its forced division and partial incorporation into Nazi Germany, but the Czech government-in-exile nevertheless continued to exist during this time period. On January 1, 1993, Czechoslovakia peacefully split into the Czech Republic and the Slovak Republic.
Form of state: Neighbours: Germany (1945–1990: BRD and DDR), Poland, from 1945 Soviet Union (1992: Ukraine), Romania (until 1939), Hungary, Austria