On This Day: December 1st

Argentine general Juan Lavalle makes a coup against governor Manuel Dorrego, beginning the Decembrist revolution.

United States presidential election: Since no candidate received a majority of the total electoral college votes in the election, the United States House of Representatives is given the task of deciding the winner in accordance with the Twelfth Amendment to the United States Constitution.

Pedro I is crowned Emperor of Brazil.

José Núñez de Cáceres wins the independence of the Dominican Republic from Spain and names the new territory the Republic of Spanish Haiti.

The slave ship Fredensborg sinks off Tromøya in Norway.

Diarist John Evelyn records skating on the frozen lake in St James's Park, London, watched by Charles II and Queen Catherine.

End of the Iberian Union: Portugal acclaims as King João IV of Portugal, ending 59 years of personal union of the crowns of Portugal and Spain and the end of the rule of the Philippine Dynasty.

Courtiers Christopher Hatton and Thomas Heneage are knighted by Queen Elizabeth I of England.

Henry V of England enters Paris alongside his father-in-law King Charles VI of France.

A council is convened in the Vatican, at which Charlemagne is to judge the accusations against Pope Leo III.