+The Second World War (1939–1945) was a global conflict, the deadliest in history, involving the vast majority of the world's nations. It saw the formation of two opposing alliances: the [Allies](/wiki/allies) and the [Axis](/wiki/axis), profoundly reshaping geopolitics and leading to the [United Nations](/wiki/united_nations).
+## See also
+- [World War I](/wiki/world_war_i)
+- [Holocaust](/wiki/holocaust)
+- [Cold War](/wiki/cold_war)
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