the leaders of 17 other nations of the need to attack British outposts. May 7 – Chief Pontiac begins "Pontiac's War" by attacking the British garrison at Fort Detroit, but the surprise attack is given away by a young native girl who informs the British of the plan. Two days later he begins the Siege of Fort Detroit. June 2 – Pontiac's War: At what becomes Mackinaw City, Michigan, Chippewas capture Fort Michilimackinac by diverting the garrison's attention with a game of lacrosse, then chasing a ball into the fort. June 28 – A magnitude 6.2 earthquake shakes Hungary and Slovakia, with a maximum Mercalli intensity of IX (Violent). Damage is limited, but 83 are killed. July–September July 7 – The British East India Company declares Mir Qasim, the Nawab of Bengal, to be deposed. July 9 – The Mozart family grand tour of Europe began, lifting the profile of child prodigy Wolfgang Amadeus. August 2 – Mir Qasim is routed at Odwa Nala. He flees to Patna, where he massacres the English garrison, but is subsequently defeated at Katwa, Murshidabad, Giria, Sooty, Udayanala and Munger. August 3 and 4 – The spectacular bankruptcies of Leendert Pieter de Neufville and Johann Ernst Gotzkowsky lead to a financial contagion and affected in the days after many merchants in Amsterdam, Hamburg, Berlin and Stockholm. August 5 – Pontiac's War – Battle of Bushy Run: British forces led by Henry Bouquet defeat Chief Pontiac's Indians at Bushy Run, in the Pennsylvania backcountry. August – Fire in Smyrna, Ottoman Empire, destroys 2,600 houses. September 1 – Catherine II of Russia endorses Ivan Betskoy's plans for a Foundling Home in Moscow. October–December October 7 – The Royal Proclamation of 1763 is issued by George III of the United Kingdom, restricting the westward expansion of British North America, and stabilizing relations with the indigenous peoples of the Americas, by barring white settlement of lands west of the Appalachian Mountains. November 24 – Bayes' theorem is first announced. December 2 – Touro Synagogue, Newport, Rhode Island, is dedicated; by the end of the 20th century, this will be the oldest surviving synagogue in North America. December 14 – The Paxton Boys massacre six Conestoga Indians in their homes in Lancaster County, Pennsylvania. When the 16 survivors are sheltered in the Lancaster workhouse (jail), the Paxton Boys ride into town and kill them as well, on December 27.