1819: Adams-Onís Treaty: US secretary of state John Quincy Adams and Spanish minister Luis Onís sign a treaty that cedes Florida to the US and settles a boundary dispute between the United States and Spain’s colonies in North America.
1847: Invading US troops face off against the Mexican army in the northern Mexican state of Coahuila during the Battle of Buena Vista, part of the Mexican-American War.
1908: Former Venezuelan president Rómulo Betancourt is born in the country’s coastal Miranda state.
1913: Former Mexican president Franciso I. Madero is assassinated in Mexico City during a successful coup d’état orchestrated by Victoriano Huerta at the time of the Mexican Revolution.
1979: The Caribbean nation of Saint Lucia gains independence from the United Kingdom.