Question: James Watt (30 January 1736 (19 January 1736 OS) - 25 August 1819) was a Scottish inventor, mechanical engineer, and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1781, which was fundamental to the changes brought by the Industrial Revolution in both his native Great Britain and the rest of the world. While working as an instrument maker at the University of Glasgow, Watt became interested in the technology of steam engines. He realised that contemporary engine designs wasted a great deal of energy by repeatedly cooling and reheating the cylinder. Watt introduced a design enhancement, the separate condenser, which avoided this waste of energy and radically improved the power, efficiency, and cost-effectiveness of steam engines.

In 1776, the first engines were installed and working in commercial enterprises. These first engines were used to power pumps and produced only reciprocating motion to move the pump rods at the bottom of the shaft. The design was commercially successful, and for the next five years Watt was very busy installing more engines, mostly in Cornwall for pumping water out of mines. These early engines were not manufactured by Boulton and Watt, but were made by others according to drawings made by Watt, who served in the role of consulting engineer. The erection of the engine and its shakedown was supervised by Watt, at first, and then by men in the firm's employ. These were large machines. The first, for example, had a cylinder with a diameter of some 50 inches and an overall height of about 24 feet, and required the construction of a dedicated building to house it. Boulton and Watt charged an annual payment, equal to one third of the value of the coal saved in comparison to a Newcomen engine performing the same work. The field of application for the invention was greatly widened when Boulton urged Watt to convert the reciprocating motion of the piston to produce rotational power for grinding, weaving and milling. Although a crank seemed the obvious solution to the conversion Watt and Boulton were stymied by a patent for this, whose holder, James Pickard, and associates proposed to cross-license the external condenser. Watt adamantly opposed this and they circumvented the patent by their sun and planet gear in 1781. Over the next six years, he made a number of other improvements and modifications to the steam engine. A double acting engine, in which the steam acted alternately on the two sides of the piston was one. He described methods for working the steam "expansively" (i.e., using steam at pressures well above atmospheric). A compound engine, which connected two or more engines was described. Two more patents were granted for these in 1781 and 1782. Numerous other improvements that made for easier manufacture and installation were continually implemented. One of these included the use of the steam indicator which produced an informative plot of the pressure in the cylinder against its volume, which he kept as a trade secret. Another important invention, one which Watt was most proud of, was the parallel motion which was essential in double-acting engines as it produced the straight line motion required for the cylinder rod and pump, from the connected rocking beam, whose end moves in a circular arc. This was patented in 1784. A throttle valve to control the power of the engine, and a centrifugal governor, patented in 1788, to keep it from "running away" were very important. These improvements taken together produced an engine which was up to five times as efficient in its use of fuel as the Newcomen engine. Because of the danger of exploding boilers, which were in a very primitive stage of development, and the ongoing issues with leaks, Watt restricted his use of high pressure steam - all of his engines used steam at near atmospheric pressure.

Using a quote from the above article, answer the following question: When did the first engines come about?
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Answer: In 1776, the first engines were installed and working in commercial enterprises.

Question: Christopher Houston Carson (December 24, 1809 - May 23, 1868), better known as Kit Carson, was an American frontiersman. He was a mountain man (fur trapper), wilderness guide, Indian agent, and U.S. Army officer. Carson became a frontier legend in his own lifetime via biographies and news articles. Exaggerated versions of his exploits were the subject of dime novels.

Carson wanted to take a winter break from the campaign. Major General Carleton refused. Kit was ordered to invade the Canyon de Chelly. It was here that many Navajos had taken refuge. Historian David Roberts writes, "Carson's sweep through the Canyon de Chelly in the winter of 1863-1864 would prove to be the decisive action in the Campaign." The Canyon de Chelly was a sacred place for the Navajo. They believed that it would now be their strongest sanctuary. Three hundred Navajo took refuge on the canyon rim at a place called Fortress Rock. They resisted Carson's invasion by building rope ladders and bridges, lowering water pots into a stream, and keeping quiet and out of sight. These three hundred Navajo survived the invasion. In January 1864, Carson swept through the 35-mile (56 km) Canyon with his forces. The thousands of peach trees in the canyon were cut down. Few Navajo were killed or captured. Carson's invasion, however, proved to the Navajo that the United States could invade their country at any time. Many Navajo surrendered at Fort Canby. By March 1864, there were 3,000 refugees at Fort Canby. An additional 5,000 arrived in the camp. They were suffering from the intense cold and hunger. Carson asked for supplies to feed and clothe them. The thousands of Navajo were led to Bosque Redondo. Many died along the way. Stragglers in the rear were shot and killed. In Navajo history, this horrific trek is known as Long Walk of the Navajo. By 1866, reports indicated that Bosque Redondo was a complete failure. Major Carleton was fired. Congress started investigations. In 1868, a treaty was signed, and the Navajo were allowed to return to their homeland. Bosque Redondo was closed.

Using a quote from the above article, answer the following question: What is Canyon de Chelly?
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Answer:
The Canyon de Chelly was a sacred place for the Navajo.