Once in power, communist parties all over the world went about building a socialist society. This huge endeavor took place in the Soviet Union throughout the 1920s and 1930s, under the leadership of Joseph Stalin.
Building socialism means, for communist governments, first and foremost, modernizing and industrializing their backward nations. However, they aspired to socialist modernity.
The Soviet Union and China came at these challenges from different places, most notably their international standing. Russian Bolsheviks confronted a hostile capitalist world on their own in 1917, but Chinese communists had the Soviet Union as a friendly northern neighbor and ally when they came to power almost thirty years later.
Far if these analogies benefitted China in its attempts to "construct socialism," China faced even more dismal economic prospects than the Soviet Union. It had a far larger population, a much smaller industrial base, and considerably less additional agricultural land available than the Soviet Union.
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