The Union of Soviet Socialist Republics (USSR) - a workers\' and peasants\' state - lasted a mere seventy years.
In addition to interference from the imperialist world, the socialist experiments thus far have faced a number of internal problems: how to maintain economic growth in the face of constantly changing needs and e.
Existing socialist states face many of the same external pressures that the Soviet Union faced; future socialist states will too.
It has been gone for a quarter of a century.
The Union of Soviet Socialist Republics (USSR) - a workers\' and peasants\' state - lasted a mere seventy years