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Who invented the elevator?

In the 19th century, elevators powered by steam became commonplace. In 1823, an "ascending room" powered by steam was built in London by two architects, Hormer and Burton. This was followed in 1835 by two architects named Frost and Stutt who built a primitive elevator that was powered by a combination of steam, counterweights and a belt system. In 1853, Elisha Otis invented and patented an elevator brake, which made elevators safer and paved the way for the development of the skyscraper.

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What did Charles Drew invent?

Charles Drew attended Columbia University in New York City, where he studied the properties of blood for the use of transfusions. He discovered that the separation of red blood cells and plasma allowed for the substances to be frozen and preserved, allowing them to be used for transfusion when needed.\nHe was also the founder and director of the American Red Cross blood bank and blood drive called Blood For Britain, which was intended to provide blood supplies to British troops during World War II.

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What is a winged scarab?

The ancient Egyptians likened the dung beetle to their first god Atum, who represented self regeneration, and the sun god Re. The winged scarab symbol was placed on tombs of pharaohs to protect them, as it was linked to the eternal journey of the sun. It was also inscribed on buildings and on carvings.

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What are the traditional religious beliefs of the Miami Indians?

The Miami people believed that manitous roamed the natural world and could take on the forms of other elements, such as humans, animals or plants. They believed that the source of the manitous' power was a so-called "kitchi manitou," which was often equated with the sun. However, they did not believe the kitchi manitou to be animate in the way that other manitous were.\nIt was believed that individuals could contact manitous in a dream by way of seclusion of fasting, and men and women were instructed to try to do so from a young age. Once a manitou was contacted, it was believed that the ..

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When was the Titanic finished being built?

In all, construction of the Titanic, which began on March 31, 1909, took over three years to complete. At 25 stories high and weighing 46,000 tons, the Titanic was everything that White Star Line Chairman J. Bruce Ismay had envisioned when he greenlighted the design and construction of the Olympic class of ships. In response to rival company Cunard’s 1907 launch of the Mauritania and the Lusitania, which became the fastest passenger ships in service, Ismay was determined to outdo the competition by building ships of tremendous size and luxury.

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Why did the Vietnamese boat people come to Australia?

Besides Australia, the Vietnamese boat people relocated to other countries such as Canada, the United Kingdom, Germany, France and the United States. People began to flee from Vietnam in 1975, but the mass exodus of the boat people only started in 1978. Most of the refugees stayed for a while in settlements in Indonesia and other areas of southeastern Asia before being relocated in Australia and other Western countries.

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How many children did Benjamin Franklin have?

William Franklin was born Feb. 22, 1762, followed by the birth of Francis on Oct. 20, 1732 and Sarah on Sept. 11, 1744. Wiliam was a loyalist during the Revolutionary War, after which he was exiled from the new United States. Francis died when he was 4 years old from complications related to smallpox. Sarah was a relief worker during the Revolutionary War.

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Why was Hamilton's debt plan controversial?

This plan outraged delegates from Maryland and Virginia, among others, who had already paid their debts. In a loose confederation, such as the United States was at that time, state governments argued that their citizens should not be taxed to relieve the obligations of other states. Hamilton argued that a swift repayment, made at the low interest rate he intended to issue the bonds for, would signal to overseas investors that America was a good investment risk and that it would borrow money in good faith.\nAnother reason for controversy was that, if the federal government bought up the debt fr..

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What did Samuel Morse invent?

A telegraph operator sent a message by tapping the code onto a telegraph machine. The machine then changed the taps into electrical signals, sending them out over wires to receivers. These receivers changed the electrical signals into Morse code printed on a piece of paper tape. Before the telephone and radio, the telegraph was the most efficient means of long-distance communication.

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Where was the first oil well drilled?

The exact location of the Drake oil well is at Cherrytree Township in the northwestern part of Pennsylvania. At a production capacity of around 20 barrels per day, the oil produced at Drake oil well is quite small by modern standards. Early oil wells were very dangerous since fires could and did break out. Drake's first oil well burnt down only a few months after its construction.

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