Stalin

Karl Marx 
He was considered one of the greatest economists in history. Marx’s theories about society, economics and politics hold that all societies progress through the dialectic of classstruggle: a conflict between an ownership class which controls production and a lower class which produces the labor for goods. Heavily critical of the current socio-economic form of society, capitalism, hecalled it the "dictatorship of the bourgeoisie", believing it to be run by the wealthy classes purely for their own benefit; and he predicted that, like previous socioeconomic systems, capitalism wouldinevitably produce internal tensions which would lead to its self-destruction and replacement by a new system: socialism. He argued that under socialism society would be governed by the working classin what he called the "dictatorship of the proletariat", the "workers' state" or "workers' democracy". He believed that socialism would, in its turn, eventually be replaced by a stateless, classlesssociety called communism.
Joseph Stalin 
He was appointed General Secretary of the party's Central Committee in 1922. Through expanding the functions of his role, Stalin managed to consolidatepower following the 1924 death of Vladimir Lenin, while eliminating any opposition. He held this nominal post until abolishing it in 1952, concurrently serving as the Premier of the Soviet Union afterestablishing the position in 1941.Stalin's concept of socialism in one country became primary policy as he emerged the leader of the Soviet Union. In 1928, Stalin replaced the decade's New EconomicPolicy with a highly centralized command economy . As a result, the USSR was rapidly transformed from an agrarian society into an industrial power. However, the rapid changes saw millions of people sentto labor at correctional, and deported and exiled to remote areas of the Soviet Union. The initial upheaval in agriculture disrupted food production and contributed to the catastrophic Soviet famine...