Czechoslovakia
Czechoslovakia or Czecho-Slovakia (Czech and Slovak: Československo, 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 its peaceful dissolution into the Czech Republic and Slovakia on 1 January 1993.
From 1939 to 1945, following its forced division and partial incorporation into Nazi Germany, the state did not de facto exist but its government-in-exile continued to operate.
From 1948 to 1990 Czechoslovakia was part of the Marxist–Leninist Warsaw Pact, which was formed in May 1955, and had a command or planned economy. A period of political liberalization in 1968, known as the Prague Spring, was forcibly ended when several other Warsaw Pact countries invaded. In 1989, as Marxist–Leninist governments and communism were ending all over Europe, Czechoslovaks peacefully deposed their government in the Velvet Revolution; state price controls were removed after a period of preparation. In 1993 Czechoslovakia divided into two sovereign states, the Czech Republic and Slovakia.