July 25

• July 25, 306
  After death of the Augustus of the West Constantius Chlorus in Britain, Severus is promoted from Caesar to Emperor by Emperor Galerius, while the troops at Eburacum proclaim Constantius' son, Constantine, which marks start of Civil wars of the Tetrarchy
• July 25, 1564
  Emperor Ferdinand I dies and is succeeded by his son Maximilian II
• July 25, 1587
  Japanese shogun Toyotomi Hideyoshi bans Christianity in Japan and orders all Christians to leave
• July 25, 1593
  Henry IV, France's Protestant King, converts to Catholicism to secure the French crown
• July 25, 1729
  North Carolina separates from Province of Carolina and becomes royal colony
• July 25, 1799
  On his way back from Syria, Napoleon Bonaparte defeat superior Ottoman forces at Battle of Abukir, which temporarily secures French control over Egypt and makes Napoleon more popular in France
• July 25, 1826
  Five members of Decembrist Revolt in Russia are executed by hanging in Saint Petersburg
• July 25, 1837
  Between Euston and Camden Town in London, William Cooke and Charles Wheatstone successfully demonstrate the first commercial use of an electric telegraph
• July 25, 1894
  Japanese forces sink the British steamer Kowshing bringing Chinese reinforcements to Korea, which becomes the first naval battle of the First Sino-Japanese War
• July 25, 1909
  Louis Blériot of France makes the first flight across the English Channel in a heavier-than-air machine, in 37 minutes
• July 25, 1934
  Austrian Nazis assassinate Chancellor Engelbert Dollfuss of Austria during a failed coup attempt
• July 25, 1957
  Monarchy in Tunisia abolished in favor of a republic and the beylical office is terminated
• July 25, 1978
  Louise Brown, a British citizen, becomes the first "test tube baby", human born through in vitro fertilization
• July 25, 2000
  Aérospatiale-BAC Concorde scheduled from Paris to New York City crashes into a hotel in nearby Gonesse hundred passengers and nine crew members aboard after ignition of fuel tanks, which becomes the only fatal Concorde accident
• July 25, 2007
  Pratibha Patil is sworn in as India's first female president
• July 25, 2010
  Wikileaks, an online publisher of anonymous, covert, and classified material, leaks to the public over 90,000 internal reports about the United States-led involvement in the War in Afghanistan from 2004 to 2010