WORLD HISTORY

Detailed explanation-1: -After the October coup of 1917, where they seized power from the Provisional Government in the name of the Soviets, Lenin proclaimed the formation of the Russian Socialist Federal Soviet Republic (RSFSR).

Detailed explanation-2: -The modern history of Russia began with the Russian Republic of the Soviet Union gaining more political and economical autonomy amidst the imminent dissolution of the USSR during 1990–1991, proclaiming its sovereignty inside the Union in June 1990, and electing its first President Boris Yeltsin a year later.

Detailed explanation-3: -Russia, country that stretches over a vast expanse of eastern Europe and northern Asia. Once the preeminent republic of the Union of Soviet Socialist Republics (U.S.S.R.; commonly known as the Soviet Union), Russia became an independent country after the dissolution of the Soviet Union in December 1991.

Detailed explanation-4: -After overthrowing the centuries-old Romanov monarchy, Russia emerged from a civil war in 1921 as the newly formed Soviet Union.

Detailed explanation-5: -The ten years 1917–1927 saw a radical transformation of the Russian Empire into a socialist state, the Soviet Union. Soviet Russia covers 1917–1922 and Soviet Union covers the years 1922 to 1991.