What led to the creation of the Soviet Union?

A
.

the rise in power of the Bolshevik Party
B
.

the harsh terms of the Treaty of Versailles
C
.

the rise in power of the National Socialist Party
D.

the harsh terms of the Molotov-Ribbentrop Pact

A. the rise in power of the Bolshevik Party

The creation of the Soviet Union was primarily a result of the Bolshevik Party, led by Vladimir Lenin, coming to power during the Russian Revolution in 1917. The party established a socialist government, led by Lenin and later Joseph Stalin, which eventually evolved into the Soviet Union.