According to the writings of Vitruvius, the Greek mathematician Archimedes created a primitive elevator in 236 B.C. that was operated by hoisting ropes wound around a drum and rotated by manpower applied to a capstan. In ancient Rome, a subterranean complex of rooms, animal pens and tunnels stood beneath the Colosseum. At various intervals, elevators powered by hundreds of men using winches and counterweights brought gladiators and large animals up through vertical shafts into the arena for battle.
In 1743, Louis XV had what was referred to as a “flying chair” built to allow one of his mistresses to access her quarters on the third floor of the Palace of Versailles. Similarly, a “flying table” in his retreat château de Choisy allowed the king and his private guests to dine without intrusion from the servants. At the sound of a bell, a table would rise from the kitchen below into the dining room with an elaborate meal, including all of the necessary accoutrements.
By the mid-19th century, elevators powered by steam or water were available for sale, but the ropes they relied upon could be worn out or destroyed and were not, therefore, generally trusted for passenger travel. However, in 1852, Elisha Graves Otis invented a safety break that revolutionized the vertical transport industry. In the event that an elevator’s hoisting rope broke, a spring would operate pawls on the car, forcing them into position with racks at the sides of the shaft and suspending the car in place. Installed in a five-story department store in New York City in 1857, Otis’ first commercial passenger elevator soon changed the world’s skyline, making skyscrapers a practical reality and turning the most valuable real estate on its head—from the first floor to the penthouse.
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Constitutional Convention, (1787), in U.S. history, convention that drew up the Constitution of the United States. Stimulated by severe economic troubles, which produced radical political movements such as Shay’s Rebellion, and urged on by a demand for a stronger central government, the convention met in the Pennsylvania State House in Philadelphia (May 25–September 17, 1787), ostensibly to amend the Articles of Confederation. All the states except Rhode Island responded to an invitation issued by the Annapolis Convention of 1786 to send delegates. Of the 74 deputies chosen by the state legislatures, only 55 took part in the proceedings; of these, 39 signed the Constitution. The delegates included many of the leading figures of the period. Among them were George Washington, who was elected to preside, James Madison, Benjamin Franklin, James Wilson, John Rutledge, Charles Pinckney, Oliver Ellsworth, and Gouverneur Morris.
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Transitional justice = consists of both judicial and non-judicial mechanisms, including prosecution initiatives, reparations, truth-seeking and also consists of both judicial and non-judicial mechanisms, including prosecution initiatives, reparations, truth-seeking.
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Answer: The Navigation Acts required that roughly three-quarters of all colonial exports be shipped through Britain first. The result was that almost two-thirds of all colonial exports were subject to laws that reduced both exports volume and price.
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