1492 Christopher Columbus notes 1st recorded reference to tobacco 1884 European Colonization and trade in Africa is officially regulated at the international Berlin Conference, formalizing European powers "Scramble for Africa" 1904 King C. Gillette patents the Gillette razor blade 1948 Mackenzie King retires after 22 years as Prime Minister of Canada 1969 An estimated 2 million people take part in the Vietnam War Moratorium Demonstration across the United States | 
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