Wikipedia:Selected anniversaries/August 2

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 * 338 BC – An allied army led by Philip II of Macedon overcame the forces of city-states led by Athens and Thebes at the Battle of Chaeronea, securing Macedonian hegemony over the majority of ancient Greece.
 * 1870 – One of the world's earliest underground tube railways opened in the Tower Subway, a tunnel beneath the River Thames in London.
 * 1916 – An explosion, blamed on Austro-Hungarian saboteurs, sank the Italian dreadnought Leonardo da Vinci.
 * 1923 – Calvin Coolidge became the 30th president of the United States after Warren G. Harding suffered a fatal heart attack.
 * 1932 – At the California Institute of Technology, American physicist Carl David Anderson proved the existence of antimatter with the discovery of the positron, for which he would receive the 1936 Nobel Prize in Physics.
 * 1939 – Leo Szilard (pictured) penned a letter, signed by Albert Einstein and addressed to U.S. president Franklin D. Roosevelt, warning that Germany may develop atomic bombs, leading to the establishment of the Manhattan Project.
 * 1947 – Star Dust, a British South American Airways airliner, crashed into Mount Tupungato in the Argentine Andes; its wreckage was not found until 1998.
 * 2007 – Raúl Iturriaga, a former deputy director of the Chilean secret police, was captured in Viña del Mar after having been on the run following a kidnapping conviction.
 * Born/died: | Thomas Grey |d|1415| Andrew Barton |d|1511| Arthur Bliss |b|1891| Jack L. Warner |b|1892| Marija Bursać |b|1920| Hugh Hickling|b|1920| Betsy Bloomingdale |b|1922| Shimon Peres |b|1923| Billy Cannon |b|1937| Jean-Pierre Melville |d|1973| Roy Cohn |d|1986