Karl Marx: German philosopher who co-authored "The Communist Manifesto" alongside Friedrich Engels. His ideas laid down foundational principles for communism.
Cold War: A period from late 1940s to early 1990s, marked by political tension and competition between the United States (representing capitalism) and the Soviet Union (representing communism) without direct military conflict.
Cuban Revolution: A revolution led by Fidel Castro in Cuba from 1953 to 1959 that resulted in the establishment of a communist government.