April 10

• April 10, 879
  Louis the Stammerer, King of France, dies and Louis III is crowned King of France
• April 10, 1516
  Jews are compelled to live in a specific area of Venice, the first ghetto
• April 10, 1525
  Albert of Prussia, a member of a branch of the House of Hohenzollern and the leader of the Teutonic Order, secularizes Order's remaining territories into the Duchy of Prussia and makes Prussia a Protestant state
• April 10, 1656
  Dutch fleet occupiers Colombo, Ceylon
• April 10, 1710
  The world's first copyright legislation, Britain's Statute of Anne, becomes effective and limits term of copyright on books: 21 years for books already in print, 14 years for new books, and additional 14 years if author still alive at end of first term
• April 10, 1790
  President George Washington signs into law the first United States Patent Act responsible for granting patents on "useful and important" inventions
• April 10, 1814
  The Duke of Wellington leads 60,000 troops against 325,000 French troops at Toulouse and defeats them just days after Napoleon abdicated the throne
• April 10, 1815
  The eruption of Mount Tambora, a stratovolcano on the island of Sumbawa in Indonesia, becomes one of the most powerful in recorded history and causes deaths of about 75,000 people and global climate anomalies during next year known as Year Without a Summer
• April 10, 1849
  Walter Hunt, an American mechanic and inventor of new stove, paper collar, ice-breaking boat, and nail-making machine, patents the safety pin
• April 10, 1864
  Austrian Archduke Maximilian, the younger brother of Austria's Franz Joseph, becomes the French crowned emperor of Mexico
• April 10, 1930
  Synthetic rubber first is produced by Sergei Vasilyevich Lebedev, a Soviet chemist
• April 10, 1938
  Austria becomes a state of Germany as Austrian Anschluss referendum records a support of 99.7% of the voters
• April 10, 1981
  Imprisoned Irish Republican Army hunger striker Bobby Sands elected to British Parliament by Fermanagh and South Tyrone by-election
• April 10, 1989
  Intel announces the 25 MHz i486 microprocessor, which integrates the 386 processor and uses 1.2 million transistors, employing 1-micron technology
• April 10, 1998
  Eighteen hours after the end of the talks deadline, the Belfast Agreement is signed between the Irish and British governments and most Northern Ireland political parties, bringing an end to The Troubles in Northern Ireland
• April 10, 2006
  Romano Prodi, lead candidate of center-left political coalition The Olive Tree, narrowly defeats Silvio Berlusconi in the Italian parliamentary elections