Question: when did the czech republic become a country
Answer: 870 Kingdom of Bohemia 1198 Czechoslovakia ( Independence from Austria - Hungary ) 28 October 1918 Federalization of Czechoslovakia ( Czech Socialist Republic ) 1 January 1969 Czech Republic became independent 1 January 1993 Joined the European Union 1 May 2004 Area Total 78,866 km ( 30,450 sq mi ) ( 115th ) Water ( % ) Population 2016 estimate 10,610,947 ( 84th ) 2011 census 10,436,560 Density 134 / km ( 347.