August 3

Events

Pre-1600

* 8 – Roman Empire general Tiberius defeats the Dalmatae on the river Bosna.
* 435 – Deposed Ecumenical Patriarch of Constantinople Nestorius, considered the originator of Nestorianism, is exiled by Roman Emperor Theodosius II to a monastery in Egypt.
* 881 – Battle of Saucourt-en-Vimeu: Louis III of France defeats the Vikings, an event celebrated in the poem '' Ludwigslied''.
* 908 – Battle of Eisenach: An invading Hungarian force defeats an East Frankish army under Duke Burchard of Thuringia.
* 1031 – Olaf II of Norway is canonized as Saint Olaf by Grimketel, the English Bishop of Selsey.
* 1057 – Frederik van Lotharingen elected as first Belgian Pope Stephen IX.
* 1342 – The Siege of Algeciras commences during the Spanish Reconquista.
*1492 – Christopher Columbus sets sail from Palos de la Frontera, Spain.
* 1527 – The first known letter from North America is sent by John Rut while at St. John's, Newfoundland.

1601–1900

*1601 – Long War: Austria captures Transylvania in the Battle of Goroszló.
* 1645 – Thirty Years' War: The Second Battle of Nördlingen sees French forces defeating those of the Holy Roman Empire.
* 1678 – Robert LaSalle builds the '' Le Griffon'', the first known ship built on the Great Lakes.
* 1778 – The theatre ''La Scala'' in Milan is inaugurated with the première of Antonio Salieri's '' Europa riconosciuta''.
* 1795 – Treaty of Greenville is signed, ending the Northwest Indian War in the Ohio Country.
* 1811 – First ascent of Jungfrau, third highest summit in the Bernese Alps by brothers Johann Rudolf and Hieronymus Meyer.
* 1829 – The Treaty of Lewistown is signed by the Shawnee and Seneca peoples, exchanging land in Ohio for land west of the Mississippi River.
* 1852 – Harvard University wins the first Boat Race between Yale University and Harvard. The race is also known as the first ever American intercollegiate athletic event.
* 1859 – The American Dental Association is founded in Niagara Falls, New York.
* 1900 – The Firestone Tire and Rubber Company is founded.

1901–present

* 1903 – Macedonian rebels in Kruševo proclaim the Kruševo Republic, which exists for only ten days before Ottoman Turks lay waste to the town.
* 1907 – Judge Kenesaw Mountain Landis fines Standard Oil of Indiana a record $29.4 million for illegal rebating to freight carriers; the conviction and fine are later reversed on appeal.
* 1914 – World War I: Germany declares war against France, while Romania declares its neutrality.
*1921 – Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court.
* 1936 – Jesse Owens wins the 100 metre dash, defeating Ralph Metcalfe, at the Berlin Olympics.
* 1936 – A fire wipes out Kursha-2 in the Meshchera Lowlands, Ryazan Oblast, Russia, killing 1,200 and leaving only 20 survivors.
* 1940 – World War II: Italian forces begin the invasion of British Somaliland.
*1946 – Santa Claus Land, the world's first themed amusement park, opens in Santa Claus, Indiana, United States.
* 1948 – Whittaker Chambers accuses Alger Hiss of being a communist and a spy for the Soviet Union.
*1949 – The Basketball Association of America and the National Basketball League finalize the merger that would create the National Basketball Association.
*1958 – The world's first nuclear submarine, the USS ''Nautilus'', becomes the first vessel to complete a submerged transit of the geographical North Pole.
* 1959 – Portugal's state police force PIDE fires upon striking workers in Bissau, Portuguese Guinea, killing over 50 people.
*1960 – Niger