he is selected as Patriarch of Constantinople, succeeding Cyril II. July 16 – A revolt in France begins in Normandy with the assassination of tax collector Charles Le Poupinel while he is working in the town of Avranches. The rebellion is brutally crushed on November 30. August 22 – The British East India Company buys a strip of land from King Peda Venkata Raya of the Vijayanagara Empire for the construction of Fort St. George, the first settlement of British India, so founding modern-day Chennai, capital city of the Indian state of Tamil Nadu (celebrated as Madras Day). September 3 – The alliance of cantons in Switzerland known as the Three Leagues or Raetia agrees with Spain to bring Italy's Valtellina area back into the alliance, on the condition that the Catholic faith of the natives be respected. September 18 – Dutch Navy Admiral Maarten Tromp introduces the line of battle tactic in a battle in the English Channel against a much larger force of Spanish Navy ships, driving off 67 ships with his fleet of 29. October–December October 31 – Naval Battle of the Downs: A Republic of the United Provinces fleet decisively defeats a Spanish fleet in English waters. November 30 – In Normandy, the revolt of the va-nu-pieds is crushed by the troops of French Army Colonel Jean de Gassion under orders of Armand Jean du Plessis, Cardinal Richelieu, with 300 of the rebels killed. December 4 – English astronomer Jeremiah Horrocks makes the first successful prediction and observation of a transit of Venus. Date unknown The Casiquiare canal, a river forming a natural channel between the Amazon River and Orinoco River basins, is first encountered by Europeans, an expedition led by Pedro Teixeira and Cristóbal Diatristán de Acuña. French nobleman Jérôme le Royer de la Dauversière obtains the seigneurial title to the island of Montreal in New France (modern-day Quebec) in the name of the Société Notre-Dame de Montréal to establish a Roman Catholic mission to evangelize indigenous peoples. The House of Assembly of Barbados meets for the first time. Russian Cossacks advance over the Urals to the Pacific, to Okhotsk. Sakoku, the isolationist foreign policy of Japan, comes fully into effect. Dejima, an island trading post off Nagasaki, becomes the only official port of trade allowed for Europeans, with the multi-national United East Indies Company (Vereenigde Oostindische Compagnie) as the only European party officially allowed.