Answer:
In 1949, the prospect of further Communist expansion prompted the United States and 11 other Western nations to form the North Atlantic Treaty Organization (NATO). The Soviet Union and its affiliated Communist nations in Eastern Europe founded a rival alliance, the Warsaw Pact, in 1955
Declared the slaves to rebel against the government
The role of a Emperor, the legion system within the military, the Latin language. ( their primary was greek )
Are you asking for the causes of the revolution in Argentina?