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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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Košice (UK: KOSH-it-sə, Slovak: [ˈkɔʃitsɛ] (listen); German: Kaschau; Hungarian: Kassa) is the largest city in eastern Slovakia. It is situated on the river Hornád at the eastern reaches of the Slovak Ore Mountains, near the border with Hungary. With a population of approximately 240,000, Košice is the second-largest city in Slovakia, after the capital Bratislava.
Being the economic and cultural centre of eastern Slovakia, Košice is the seat of the Košice Region and Košice Self-governing Region, the Slovak Constitutional Court, three universities, various dioceses, and many museums, galleries, and theatres. In 2013 Košice was the European Capital of Culture, together with Marseille, France.