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 correct answer is history and tradition.

answer: in october 1962, an american u-2 spy plane secretly photographed nuclear missile sites being built by the soviet union on the island of cuba. president kennedy did not want the soviet union and cuba to know that he had discovered the missiles. he met in secret with his advisors for several days to discuss the problem.

explanation: