Answer:
Ukraine
Ukraine was a former Soviet Republic and part of the U.S.S.R (Union of Soviet Socialist Republics).
Step-by-step explanation:
Ukraine was a former Soviet Republic and a constituent part of the U.S.S.R (Union of Soviet Socialist Republics) before gaining independence in 1991. As a key component of the Soviet Union, Ukraine played a significant role in the geopolitical landscape of Eastern Europe.