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1939–1945 global conflict
World War II, or the Second World War, was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated. Tanks and aircraft played major r…
Read article →1914–1918 global conflict
World War I, or the First World War, also known as the Great War, was a global conflict between two coalitions: the Alli…
1861–1865 conflict in the United States
The American Civil War was a civil war in the United States between the Union and the Confederacy, which was formed in 1…
1947–1991 geopolitical rivalry between US and USSR
The Cold War was a period of international geopolitical rivalry between the United States (US) and the Soviet Union (USS…