September 1939- occupation of the entire Upper Silesia by Germany, 21. 8. 1968 - Invasion of the Warsaw Pact troops

1992 - 1995 Bosnian War

21. 8. 1968 - Invasion of the Warsaw Pact troops, 30. 5. 1945 – 29. 10. 1946 - Expulsion of Germans from Czechoslovakia

1950 - creation of the buffer zone between Czechoslovakia and Western Germany and Austria

23. 2. 1949 – Beginning the forced agricultural collectivisation, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

21. 8. 1968 - Invasion of the Warsaw Pact troops

1945 - The liberation of the concentration camps

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1944 - 1945 - The liberation of Czechoslovakia, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR, Ukrainian insurgent movement 1930–1950

1. 1. 1977 - Declaration of Chart 77, 1989 - The fall of the iron curtain

8. 5. 1945 - End of WWII