Wikipedia:Selected anniversaries/November 11
November 11: Independence Day in Poland (1918) and Angola (1975); St. Martin's Day in the Netherlands; Remembrance Day in the Commonwealth, Armistice Day in Europe and Veterans Day in the United States.
- 1675: Gottfried Leibniz (pictured) demonstrated integral calculus for the first time to find the area under the graph of a function y = f(x) by using antiderivatives.
- 1930: A patent was awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator.
- 1965: Ian Smith, Premier of the British Crown Colony of Southern Rhodesia, issued the Unilateral Declaration of Independence.
- 1975: The Australian constitutional crisis of 1975 came to a head as Prime Minister Gough Whitlam was dismissed from office by Governor-General Sir John Kerr.
- 1978: Maumoon Abdul Gayoom began his first term as President of the Maldives.
Recent days: November 10 – November 9 – November 8
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