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Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman who has been described as America's greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventions, which include the phonograph, the motion picture camera, and early versions of the electric light bulb, have had a widespread impact on the modern industrialized world. He was one of the first inventors to apply the principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial research laboratory.Edison was raised in the American Midwest; early in his career he worked as a telegraph operator, which inspired some of his earliest inventions.
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Portsmouth ( (listen)) is a port city primarily built on Portsea Island in the county of Hampshire, South East England. It is also known colloquially as Pompey, a nickname shared with HMNB Portsmouth and the Portsmouth Football Club. It is the United Kingdom's only island city. Portsmouth is situated 70 miles (110 km) south-west of London and 19 miles (31 km) south-east of Southampton. Portsmouth's population was recorded as 205,100 in the 2011 UK Census. The city forms part of the South Hampshire conurbation.
Portsmouth's history can be traced back to Roman Britain. A significant naval port for centuries, it has the world's oldest dry dock. Portsmouth was England's first line of defence during the 1545 French invasion. By the early nineteenth century, the world's first mass-production line was set up in Portsmouth Dockyard's Block Mills; this made it the world's most industrialised site, and the birthplace of the Industrial Revolution. Portsmouth was the most heavily-fortified town in the world and was considered "the world's greatest naval port" at the height of the British Empire, during the Pax Britannica. The Palmerston Forts were built around Portsmouth in 1859 in anticipation of another invasion from continental Europe.
King Richard I first granted Portsmouth market town status on 2 May 1194 with a royal charter and a coat of arms, "a crescent of gold on a shade of azure, with a blazing star of eight points".
On 21 April 1926, Portsmouth was elevated from town to city status. Its motto, "Heaven's Light Our Guide" (referring to the city's eight-pointed star and crescent-moon emblem), was registered in 1929. The 800th anniversary of the royal charter was celebrated on 2 May 1994. Portsmouth became a unitary authority on 1 April 1997, with its city council gaining the powers of a non-metropolitan county and district council previously held by Hampshire County Council.
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