11 March 1990 (declared); 6 September 1991 (recognized by the Soviet Union); notable earlier dates: 6 July 1253 (coronation of Mindaugas, traditional founding date), 1 July 1569 (Polish-Lithuanian Commonwealth created)
24 August 1991 (from the Soviet Union); notable earlier dates: 1157 (Principality of Vladimir-Suzdal created); 16 January 1547 (Tsardom of Muscovy established); 22 October 1721 (Russian Empire proclaimed); 30 December 1922 (Soviet Union established)