WHAT ALL HAPPENED APRIL TO OCTOBER 1675
Find out what all happened April to October 1675

Franco-Dutch War: forces of the Holy Roman Empire defeat the French in the Battle of Konzer Brücke. (11. August 1675)

Leibniz makes the first use of the long s (∫) as a symbol of the integral in calculus. (29. October 1675)

The foundation stone of the Royal Greenwich Observatory in London, England is laid. (10. August 1675)

King Charles II of England orders the construction of the Royal Greenwich Observatory. (4. May 1675)

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