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Hace 19 horas · Pittsburgh (/ ˈ p ɪ t s b ɜːr ɡ / PITS-burg) is a city in the Commonwealth of Pennsylvania and the county seat of Allegheny County.It is the second-most populous city in Pennsylvania after Philadelphia and the 68th-most populous city in the U.S., with a population of 302,971 as of the 2020 census.The city anchors the Pittsburgh metropolitan area of Western Pennsylvania.
Hace 19 horas · The Great Library of Alexandria in Alexandria, Egypt, was one of the largest and most significant libraries of the ancient world.The library was part of a larger research institution called the Mouseion, which was dedicated to the Muses, the nine goddesses of the arts. The idea of a universal library in Alexandria may have been proposed by Demetrius of Phalerum, an exiled Athenian statesman ...
