Communism was the ideology that clashed with capitalism during the 20th century. Emerging from the works of Karl Marx and Friedrich Engels, communism advocated for the abolition of private property and the establishment of a classless society. In contrast, capitalism promoted individual ownership and profit-driven economies. This ideological conflict became particularly pronounced during the Cold War, characterized by political, economic, and military tensions between the capitalist West, led by the United States, and the communist East, represented by the Soviet Union. The clash influenced global politics, leading to proxy wars, the arms race, and widespread propaganda efforts from both sides throughout the century.