Wikipedia:Selected anniversaries/July 25
July 25: 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.
- 1261 - The Latin Empire ended when Michael VIII Palaeologus and his Nicaean forces captured Constantinople to re-establish the Byzantine Empire.
- 1909 - French aviator Louis Blériot (pictured) made the first crossing of the English Channel in a heavier-than-air flying machine.
- 1978 - Louise Brown, the world's first test-tube baby, was born in Oldham, England.
- 2000 - Air France Concorde Flight 4590 crashed after takeoff in Paris, killing 113 people.