WHAT HAPPENED ON 27. OCTOBER
Want to find out what all happened on 27. October

Constantine the Great is said to have received his famous Vision of the Cross. (27. October 312)

Saracen invasion of Sardinia. (27. October 710)

Edmund I succeeds Athelstan as King of England. (27. October 939)

Traditional founding of the city of Amsterdam. (27. October 1275)

Italian Wars: The French troops lay siege to Pavia. (27. October 1524)

Condemned as a heretic, Michael Servetus is burned at the stake just outside Geneva. (27. October 1553)

Second Battle of Newbury in the English Civil War. (27. October 1644)

Philadelphia, Pennsylvania is founded. (27. October 1682)

The United States and Spain sign the Treaty of Madrid, which establishes the boundaries between Spanish colonies and the U.S. (27. October 1795)

The French Army enters Berlin, following the Battle of Jena. (27. October 1806)

United States annexes the former Spanish colony of West Florida. (27. October 1810)

Bellini's third opera Il pirata is premiered at Teatro alla Scala di Milano (27. October 1827)

Missouri governor Lilburn Boggs issues the Extermination Order, which orders all Mormons to leave the state or be exterminated. (27. October 1838)

Marshal François Achille Bazaine surrenders to Prussian forces at the conclusion of the Siege of Metz along with 140,000 French soldiers in one of the biggest French defeats of the Franco-Prussian War. (27. October 1870)

The first underground New York City Subway line opens; the system becomes the biggest in United States, and one of the biggest in world. (27. October 1904)

Černová massacre: Fifteen people are killed in the Hungarian half of Austria-Hungary when a gunman opens fire on a crowd gathered at a church consecration. This would led to protests over the treatment of minorities in Austria-Hungary. (27. October 1907)

World War I: The British super-dreadnought battleship HMS Audacious (23,400 tons), is sunk off Tory Island, north-west of Ireland, by a minefield laid by the armed German merchant-cruiser Berlin. (27. October 1914)

Battle of Segale: Negus Mikael, marching on the Ethiopian capital in support of his son Emperor Iyasus V, is defeated by Fitawrari abte Giyorgis, securing the throne for Empress Zauditu. (27. October 1916)

A referendum in Rhodesia rejects the country's annexation to the South African Union. (27. October 1922)

The Uzbek SSR is founded in the Soviet Union. (27. October 1924)