Learn about the various philosophers, concepts, systems, political agitators, and statesmen that influenced the formation of the U.S. government.
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The dispute over slavery had divided Americans since the founding of the United States.
The American Revolution (1775–83) won political independence for 13 of Britain’s North American colonies, which subsequently formed the United States of America.
The longest and most severe economic downturn ever experienced by the industrialized Western world, the Great Depression began in 1929 and lasted until about 1939.
A rivalry between the U.S. and the Soviet Union that tried to convince the world of the superiority of their respective worldviews and ways of life.
World War I, also called the First World War or the Great War, was an international conflict that in 1914–18 involving Russia, the United States, the Middle East, and other regions.
Learn about the major events and battles of World War II.
North Vietnam fought a guerrilla war against U.S.-supported South Vietnamese forces during this war.
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Normandy Invasion, also called Operation Overlord or D-Day was launched on June 6, 1944.
