claim: The Latvian Soviet Socialist Republic was a state of the Soviet Union.
evidence: The Republics of the Soviet Union or the Union Republics -LRB- союзные республики , soyuznye respubliki -RRB- of the Soviet Union were ethnically based administrative units that were subordinated directly to the Government of the Soviet Union .. Soviet Union. Soviet Union. ethnically based. National delimitation in the Soviet Union. Government of the Soviet Union. Government of the Soviet Union. For most of its history , the Soviet Union was a highly centralized state ; the decentralization reforms during the era of Perestroika -LRB- `` Restructuring '' -RRB- and Glasnost -LRB- `` Openness '' -RRB- conducted by Mikhail Gorbachev led to the dissolution of the Soviet Union in 1991 .. Soviet Union. Soviet Union. decentralization. decentralization. Perestroika. Perestroika. Glasnost. Glasnost. Mikhail Gorbachev. Mikhail Gorbachev. dissolution of the Soviet Union. dissolution of the Soviet Union