Slavery ended with the ratification of the 13th amendment to the Constitution. the emancipation proclamation by Abraham lincoln which was adocument that abolished slavery. later MLK Jr. ended segergation.
Christianity became a ton easier when the romans accepted Christianity as a religion. With just that I would say that it hurt the roman empire, because romans pretty much had to leave Christians alone.
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the Korean War and the Vietnam War
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it's my answer, so yeh
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It started in 1814 and ended a year later in 1815
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Alcohol is a huge cause of accidents