January 1 Great Britain and Ireland union is in effect, creating United Kingdom January 12 Frisia and Groningen begin use of Gregorian calendar January 12 Parts of Netherlands adopt Gregorian calendar January 18 Frederik I/Sophie Charlotte van Hanover crowned king/queen of Prussia March 9 France, Cologne and Bavaria sign alliance April 29 Drenthe Netherlands adopts Gregorian calendar, tomorrow is May 12, 1701 May 12 Drenthe adopts Gregorian calendar (yesterday is 4/29/1701) June 12 Act of Settlement gives English crown to Sophia, Princess of Hanover July 24 Antoine de la Mothe Cadillac found trading post at Ft. Pontchartrain, which later becomes the city of Detroit September 7 Germany, England and Netherlands sign anti-French covenant October 9 Collegiate School of Ct (Yale U), chartered in New Haven November 8 William Penn presents Charter of Priviliges