GENERAL KNOWLEDGE

Detailed explanation-1: -12 States-Armenia, Azerbaijan, Belarus, Georgia, Kazakhstan, Kyrgyzstan, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine, and Uzbekistan.

Detailed explanation-2: -From 1956 until its dissolution in 1991, the Soviet Union consisted of 15 Soviet Socialist Republics.

Detailed explanation-3: -Over the course of the summer of 1990, all fifteen republics of the former Soviet Union followed Russia’s lead, and one by one they declared themselves to be sovereign states.

Detailed explanation-4: -The Commonwealth of Independent States (CIS) is an intergovernmental organisation created in 1991 amongst the former countries of the Soviet Union.