Events

479 BC – Greco-Persian Wars: Persian forces led by Mardonius are routed by Pausanias, the Spartan commander of the Greek army in the Battle of Plataea.
410 – The sacking of Rome by the Visigoths ends after three days.
1172 – Henry the Young King and Margaret of France are crowned as junior king and queen of England.
1232 – The Formulary of Adjudications is promulgated by Regent Hōjō Yasutoki. (Traditional Japanese date: August 10, 1232)
1593 – Pierre Barrière fails in his attempt to assassinate King Henry IV of France.
1689 – The Treaty of Nerchinsk is signed by Russia and the Qing empire.
1776 – The Battle of Long Island: in what is now Brooklyn, New York, British forces under General William Howe defeat Americans under General George Washington.
1793 – French counter-revolution: the port of Toulon revolts and admits the British fleet, which lands troops and seizes the port leading to Siege of Toulon.
1798 – Wolfe Tone's United Irish and French forces clash with the British Army in the Battle of Castlebar, part of the Irish Rebellion of 1798, resulting in the creation of the French puppet Republic of Connaught.
1810 – Napoleonic Wars: The French Navy defeats the British Royal Navy, preventing them from taking the harbour of Grand Port on Île de France.
1813 – French Emperor Napoleon Bonaparte defeats a larger force of Austrians, Russians, and Prussians at the Battle of Dresden.
1828 – Uruguay is formally proclaimed independent at preliminary peace talks brokered by Great Britain between Brazil and Argentina during the Cisplatine War.
1832 – Black Hawk, leader of the Sauk tribe of Native Americans, surrenders to U.S. authorities, ending the Black Hawk War.
1859 – Petroleum is discovered in Titusville, Pennsylvania leading to the world's first commercially successful oil well.
1861 – Union forces attack Cape Hatteras, North Carolina.
1883 – The eruption of Krakatoa
1896 – Anglo-Zanzibar War: the shortest war in world history (09:00 to 09:45) between the United Kingdom and Zanzibar.
1916 – Romania declares war against Austria-Hungary, entering World War I as one of the Allied nations.
1921 – The British install the son of Sharif Hussein bin Ali (leader of the Arab Revolt of 1916 against the Ottoman Empire) as King Faisal I of Iraq.
1922 – The Turkish army takes the Aegean city of Afyonkarahisar from the Greeks.
1927 – Five Canadian women file a petition to the Supreme Court of Canada, asking, "Does the word 'Persons' in Section 24 of the British North America Act, 1867, include female persons?"
1928 – The Kellogg-Briand Pact outlawing war is signed by the first 15 nations to do so. Ultimately sixty-one nations will sign it.
1939 – First flight of the turbojet-powered Heinkel He 178, the world's first jet aircraft.
1943 – Japanese forces evacuate New Georgia Island in the Pacific Theater of Operations during World War II.
1957 – The Constitution of Malaysia comes into force.
1962 – The Mariner 2 unmanned space mission is launched to Venus by NASA.
1969 – Israeli commando force penetrates deep into Egyptian territory to stage a mortar attack on regional Egyptian Army headquarters in the Nile Valley of Upper Egypt.
1971 – An attempted coup fails in the African nation of Chad. The Government of Chad accuses Egypt of playing a role in the attempt and breaks off diplomatic relations.
1975 – The Governor of Portuguese Timor abandons its capital, Dili, and flees to Atauro Island, leaving control to a rebel group.
1979 – A Provisional Irish Republican Army bomb kills British World War II admiral Louis Mountbatten and three others while they are boating on holiday in Sligo, Republic of Ireland. Shortly after, 18 British Army soldiers are killed in an ambush near Warrenpoint, Northern Ireland (see Warrenpoint ambush).
1982 – Turkish military diplomat Colonel Atilla Altıkat is shot and killed in Ottawa, Ontario, Canada's capital. Justice Commandos Against Armenian Genocide claim responsibility, saying they are avenging the massacre of 1.5 million Armenians in the 1915 Armenian Genocide.
1985 – The Nigerian government is peacefully overthrown by Army Chief of Staff Major General Ibrahim Babangida.
1991 – The European Community recognizes the independence of the Baltic states of Estonia, Latvia and Lithuania.
1991 – Moldova declares independence from the USSR.
1993 – The Rainbow Bridge, connecting Tokyo's Shibaura and the island of Odaiba, is completed.
2000 – 540-metre (1,772 ft)-tall Ostankino Tower in Moscow catches fire, three people are killed.
2003 – Mars makes its closest approach to Earth in nearly 60,000 years, passing 34,646,418 miles (55,758,005 km) distant.
2003 – The first six-party talks, involving South and North Korea, the United States, China, Japan and Russia, convene to find a peaceful resolution to the security concerns as a result of the North Korean nuclear weapons program.
2006 – Comair Flight 5191 crashes on takeoff from Blue Grass Airport in Lexington, Kentucky bound for Hartsfield-Jackson International Airport in Atlanta, Georgia. Of the passengers and crew, 49 of 50 are confirmed dead in the hours following the crash.
2009 – The Burmese military junta and ethnic armies begin three days of violent clashes in the Kokang Special Region.

Holidays and observances

Christian Feast Day:
Baculus of Sorrento
Caesarius of Arles
Margaret the Barefooted
Monica of Hippo, mother of Augustine of Hippo
Phanourios of Rhodes
Rufus and Carpophorus
Independence Day, celebrates the independence of Moldova from the USSR in 1991.
Lyndon Baines Johnson Day (Texas)
Volturnalia, held in honor of Volturnus. (Roman Empire)

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