From reading their works, many followers of Karl Marx and Friedrich Engels drew the idea that the socialist economy would be based on planning and not market mechanism. These ideas later developed into the belief that planning was superior to market mechanism. Upon seizing power, the Bolsheviks began advocating a national state planning system. The 8th Congress of the Russian Communist Party (Bolsheviks) resolved to institute "the maximum centralisation of production [...] simultaneously striving to establish a unified economic plan." The Gosplan, the State Planning Commission, the Supreme Soviet of the National Economy and other central planning organs were established during the 1920s in the era of the New Economic Policy. On introducing the planning system, it became common belief in the international communist movement that the Soviet planning system was a more advanced form of economic organisation than capitalism. This led to the system being introduced voluntary in countries such as China, Cuba and Vietnam and in some cases imposed by the Soviet Union.