Who believed that all socialist systems would eventually evolve in communist systems

Karl Marx. Marx was a 19th century thinker who is systematized a historical analysis of labor relations. In his theory, societies would eventually move forward from a capitalist mode of production, through class struggle, towards, first, a socialist state and later, and ideally, into a communist society where there would be no social classes, no money and no state, and the means of production would be of common ownership.  

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d

islam spread slowly through much of africa through trade and preaching.