President Lincoln signed an Act that made slavery illegal in US territories.
Slavery also became illegal in the States on January 1, 1863.
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The US Supreme Court struck down a Louisiana law that required schools to teach creationism.
Father's Day was celebrated for the first time in the US.
Louis IV was crowned king of West Francia.
Benito Mussolini was arrested in Switzerland for a violent strike. He spent two weeks in jail and was deported to Italy.
Drug lord Pablo Escobar handed himself into the police.
