Gunpowder is an explosive material that burns rapidly to form a high pressure gas. Expansion of this gas inside the barrel of a gun can accelerate a projectile to great speed. Gunpowder is therefore used a propellant in a variety of thinks like ammunition. It is also used in explosives for blasting operations, fireworks and fuses in slightly different forms. Gunpowder has had a unique history since its discovery in the ... clouds as shields or cover to hide themselves. They also used gunpowder to startle and confuse their enemy. During the 1200's the use of gunpowder spread into Europe. Gunp...

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... account for their successes and go some way to explaining how a group of "barbarian" invaders from the east could slaughter some of Europe's largest armies to a man. The first and main advantage the Mongols had over their European enemies was far superior tactics and mobility. The Mongol warrior rode light, wore quilted armor and a silk shirt underneath. The European cavalry however ... wore cumbersome and essentially suited to a decisive first attack. One of the Mongols most formidable tactical moves was the retreat. In the face of heavy cavalry, they would more often than not withdraw...

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... smallest possible perfect horse. The Miniature comes in all possible horse colors. Miniature Horses are seen in performance classes - halter obstacle, hunter jumper, showmanship, costume, liberty, and driving. A variety of driving classes are popular at the more than 250 AMHA scantioned horse shows nationwide, and include pleasure driving, roadster driving, obstacle driving, single and multiple hitches and fine viceroy. Because ... a favorite with riders, young and old. His unique coloring provides individual expression, since no two horses are alike. A Spotted Saddle Horse is a light ho...

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• Grade Level: High School

... , Roman ruins, medieval fortresses and Renaissance castles. We also learned that France is home to the Ariane space rocket and Airbus Industries, and the boasts the world's most extensive high-speed train network. We arrived at the train station around 8.15pm. We took a taxi to Bedford Hotel which was located on a quiet street in the heart ... hotel, I noticed that the weather was fairly pleasant with women dressed in bright dresses and men wearing light summer suits. The average January temperature in Paris is a chilly 3 degrees Celsius (37 degrees Fahrenheit) rising steadily to a fairl...

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... we have this technology is that between those years a great change in the world's history was made. People started to discover faster methods of producing goods, which increased their economy. However, this industrialization had no effects on society. Society then was still very poor in some ... that Britain had iron and coal resources, they also had developed an excellent transportation system to speed the flow of goods. Britain was also the leading trading nation in Europe, which gave their merchants lots of capital. So as a result they used their capital to invest in textiles, mines r...

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... the connection that sugar helped spark the creation of capitalism, which led to the eventual beginning of the Industrial Revolution. Despite the horrible treatment of the people, it did spark the Industrial Revolution which is responsible for much advancement involving efficiency, speed, and quality in modern business practices. Also as ... assumption that all foreign people were inferior beings. Another propaganda of literature that portrayed Africa as a negative place was in the novel Heart of Darkness by Joseph Conrad. In the novel, Europe is referred to as the light and Africa is se...

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... Axis Powers - Germany, Italy, Japan 4 Major Allied Powers - US, UK, France, USSR Rhineland - section of Western Germany declared a Demilitarized Zone by the treaty of Versailles Appeasement - the policy of giving in to demands - Start: Occupation of Rhineland - End: Invasion of Poland Blitzkrieg - "lightning war- which stressed speed and surprise; Stuka bombers, tanks smash defenses, knock out communication Luftwaffe - German Air Force RAF - British ... the US during the war) - Farmers grew enough crops to feed the US and all its Allies - planes, bombers, tanks, scout cars and carriers,...

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• Grade Level: Undergraduate

... . One such example is the Ford-Firestone crisis. The Jeeps produced by Ford, but bearing Firestone tires were discovered to flip at sharp turns going over a certain speed. A number of accidents and fatalities resulted. When the defect became publicized, both companies refused to acknowledge the error and assume responsibility. Because proving liability on either individually proved impossible, both companies were ... , their losses by far superseded any losses that the lawsuits may have resulted in, for they lost public trust. Their sales dropped dramatically, but most importantly, they ...

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... tire. This became extremely popular because it significantly smoothed out the ride of the bicycle and allowed greater speeds. Because of this cyclists could more comfortably cycle greater distances. Within four years of its creation, the pneumatic tire became standard on all bikes (Whitt 21). In the 1890's two and three speed internal hubs became popular. This allowed cyclists to more easily ascend ... hills and set their pedaling force to their terrain (Cycling ... 1). This type of internal hub is still in use today on many bicycles. Shortly after the internal gear system came the exter...

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• Grade Level: High School