Wikipedia:Selected anniversaries/July 25
July 25: Commonwealth Constitution Day in Puerto Rico; Galicia Day in Galicia, Spain; Feast day of Saint James the Great.
- 306 – Constantine I was proclaimed Roman Emperor by his troops after the death of Constantius Chlorus.
- 1536 – Spanish conquistador Sebastián de Belalcázar founded Santiago de Cali in present-day western Colombia while on his search for the mythical city of El Dorado.
- 1792 – French Revolutionary Wars: Charles William Ferdinand, Duke of Brunswick issued the Brunswick Manifesto to the population of Paris, promising vengeance if King Louis XVI and other members of the French Royal Family were harmed.
- 1909 – French aviator Louis Blériot (pictured) made the first crossing of the English Channel in a heavier-than-air flying machine, flying from Les Barraques near Calais in France to Dover, England.
- 1978 – Two Puerto Rican pro-independence activists were killed by police at Cerro Maravilla in Villalba, Puerto Rico, sparking a series of political controversies where the police officers were eventually found guilty of murder and several high-ranking local government officials were accused of covering-up the incident.
- 2000 – Air France Concorde Flight 4590, en route from Charles de Gaulle International Airport in Paris to John F. Kennedy International Airport in New York City, crashed in Gonesse, France, killing all 100 passengers and nine crew members, as well as four people on the ground.
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