NASA launched the Gemini program’s tenth and final crewed spacecraft, Gemini 12.
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Canada's second-largest city, Montreal, started dumping untreated waste in the Saint Lawrence River.
Pope Innocent III brought together the council for the Fourth Council of the Lateran, which was held at the Lateran Palace in Rome, Italy.
Poland became an independent country.
The first college fraternity, The Flat Hat Society, was formed in the Raleigh Tavern at the College of William and Mary in Williamsburg, Virginia.
German polymath Gottfried Wilhelm Leibniz demonstrated integral calculus for the first time.
