306 Constantine I is proclaimed Roman Emperor by his troops 1814 English engineer George Stephenson introduces his first steam locomotive, a travelling engine designed for hauling coal on the Killingworth wagonway named Blücher 1943 Benito Mussolini dismissed as Italian Premier and arrested on the authority of King Victor Emmanuel III 1944 World War II: Operation Spring - one of Canada's bloodiest days, 18,444 casualties and 5,021 killed 1997 Scientists announce the first human stem cells to be cultured in a laboratory using tissue taken from aborted human embryos |
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