July 29 events in history

238 The Praetorian Guard storm the palace and capture Pupienus and Balbinus. They are dragged through the streets of Rome and executed. On the same day, Gordian III, age 13, is proclaimed emperor
615 Pakal ascends the throne of Palenque at the age of 12
904 Sack of Thessalonica: Saracen raiders under Leo of Tripoli sack Thessaloniki, the Byzantine Empire's second-largest city, after a short siege, and plunder it for a week
1014 Byzantine–Bulgarian wars: Battle of Kleidion – Byzantine emperor Basil II inflicts a decisive defeat on the Bulgarian army, and his subsequent treatment of 15,000 prisoners reportedly causes Tsar Samuil of Bulgaria to die of a heart attack less than three months later, on October 6
1018 Count Dirk III defeats an army sent by Emperor Henry II in the Battle of Vlaardingen
1030 Ladejarl-Fairhair succession wars: Battle of Stiklestad – King Olaf II fights and dies trying to regain his Norwegian throne from the Danes
1148 The Siege of Damascus ends in a decisive crusader defeat and leads to the disintegration of the Second Crusade
1565 The widowed Mary, Queen of Scots, marries Henry Stuart, Lord Darnley, Duke of Albany, at Holyrood Palace in Edinburgh, Scotland
1567 James VI is crowned King of Scotland at Stirling
1588 Anglo-Spanish War: Battle of Gravelines – English naval forces under the command of Lord Charles Howard and Sir Francis Drake defeat the Spanish Armada off the coast of Gravelines, France
1693 War of the Grand Alliance: Battle of Landen – France wins a Pyrrhic victory over Allied forces in the Netherlands
1793 John Graves Simcoe decides to build a fort and settlement at Toronto, having sailed into the bay there
1836 Inauguration of the Arc de Triomphe in Paris, France
1848 Irish Potato Famine: Tipperary Revolt – In Tipperary, Ireland, then in the United Kingdom, an unsuccessful nationalist revolt against British rule is put down by police
1851 Annibale de Gasparis discovers asteroid 15 Eunomia
1858 United States and Japan sign the Harris Treaty
1864 American Civil War: Confederate spy Belle Boyd is arrested by Union troops and detained at the Old Capitol Prison in Washington, D.C
1899 The First Hague Convention is signed
1900 In Italy, King Umberto I of Italy is assassinated by the anarchist Gaetano Bresci
1907 Sir Robert Baden-Powell sets up the Brownsea Island Scout camp in Poole Harbour on the south coast of England. The camp runs from August 1 to August 9, 1907, and is regarded as the foundation of the Scouting movement
1913 The Norwegian football club Vålerenga Fotball was founded
1914 The Cape Cod Canal opened
1920 Construction of the Link River Dam begins as part of the Klamath Reclamation Project
1921 Adolf Hitler becomes leader of the National Socialist German Workers Party
1932 Great Depression: In Washington, D.C., troops disperse the last of the "Bonus Army" of World War I veterans
1937 Tōngzhōu Incident: In Tōngzhōu, China, the East Hopei Army attacks Japanese troops and civilians
1945 The BBC Light Programme radio station is launched for mainstream light entertainment and music
1948 Olympic Games: The Games of the XIV Olympiad – After a hiatus of 12 years caused by World War II, the first Summer Olympics to be held since the 1936 Summer Olympics in Berlin, open in London
1950 Korean War: After four days, the No Gun Ri Massacre ends when the US Army 7th Cavalry Regiment is withdrawn
1957 The International Atomic Energy Agency is established
1958 U.S. President Dwight D. Eisenhower signs into law the National Aeronautics and Space Act, which creates the National Aeronautics and Space Administration (NASA)
1959 First United States Congress elections in Hawaii as a state of the Union
1965 Vietnam War: The first 4,000 101st Airborne Division paratroopers arrive in Vietnam, landing at Cam Ranh Bay
1967 Vietnam War: Off the coast of North Vietnam the USS Forrestal catches on fire in the worst U.S. naval disaster since World War II, killing 134
1967 During the fourth day of celebrating its 400th anniversary, the city of Caracas, Venezuela is shaken by an earthquake, leaving approximately 500 dead
1973 Greeks vote to abolish the monarchy, beginning the first period of the Metapolitefsi
1973 During the Dutch Grand Prix driver Roger Williamson was killed in the race, after a suspected tire failure caused the car to pitch into the barriers at high speed
1976 In New York City, David Berkowitz (aka the "Son of Sam") kills one person and seriously wounds another in the first of a series of attacks
1980 Iran adopts a new "holy" flag after the Islamic Revolution
1981 A worldwide television audience of over 700 million people watch the wedding of Charles, Prince of Wales, and Lady Diana Spencer at St Paul's Cathedral in London
1987 British Prime Minister Margaret Thatcher and President of France François Mitterrand sign the agreement to build a tunnel under the English Channel (Eurotunnel)
1987 Prime Minister of India Rajiv Gandhi and President of Sri Lanka J. R. Jayewardene sign the Indo-Sri Lanka Accord on ethnic issues
1993 The Supreme Court of Israel acquits alleged Nazi death camp guard John Demjanjuk of all charges and he is set free
1996 The child protection portion of the Communications Decency Act is struck down by a U.S. federal court as too broad
2005 Astronomers announce their discovery of the dwarf planet Eris