KARL MARX
Karl Heinrich Marx who lived from 5 May 1818 – 14 March 1883 was a German philosopher, economist, sociologist, historian, journalist, and revolutionary socialist. He was born into a wealthy middle-class family in Trier in the Prussian Rhineland,and studied at the University of Bonn and the University of Berlin, where he developed an interest in the philosophical ideas of the Young Hegelians.In 1849 he was exiled from Germany for his beliefs and moved to London with his wife and children.Here he continued writing and formulating theories about social and economic activity. He also campaigned for socialism which is a theory of social organization which states that the means of production, distribution, and exchange should be owned or regulated by the community as a whole.He became an integral figure to this campaign.
His theories about society, economics and politics – collectively known as Marxism- state that human societies advanced through a conflict between an ownership class that controls production and a dispossessed labouring class that provides the labour for production.
Marx has been described as one of the most influential figures in human history.Revolutionary socialist governments that tried Marxist concepts took power in many nations in the 20th century,leading to the formation of socialist states as the Soviet Union in 1922 and the People's Republic of China in 1949. Also,many labour unions and workers' parties worldwide are influenced by Marxism.He is also recognized as one of the three founding fathers of modern social science.

Joseph Stalin
Joseph Stallin,( 18 December 1878 – 5 March 1953), was the leader of the Soviet Union from the mid-1920s until he perished in 1953.
He was a notable revolutionary in the Russian Revolution.
He shot through the ranks of then leader Vladmir Lenin’s party and ascended to power of the Soviet Union