Airplane

Airplanes are heavier-than-air craft that use wings to produce lift in order to fly. Airplanes transport people from place to place and also ferry shipments of mail, perishable goods, and other important cargo . The airplane has also revolutionized warfare. Many aeronautical advances in technology, such as the jet engine, were achieved by military engineers and designers...

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Canoes

Canoes were developed over the course of thousands of years by the native peoples of North America. The word 'canoe' originiated from the word 'kenu' - meaning dugout. These seagoing boats were used by the Carib Indians of the Caribbean islands, and were made of large tree trunks which were shaped and hollowed, and were strong enough to travel between the islands.  North American Indians are responsible for creating the more well-known version of the canoe - a frame of wooden ribs covered with the lightweight bark of birch trees, and...

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Horse

Horse, large land mammal notable for its speed, strength, and endurance. Horses are members of the Equidae family, which also includes zebras and asses. Like all equids, the horse is extremely well adapted to traveling long distances with great efficiency and to surviving on a diet of nutrient-poor, high-fiber grasses. The horse is an intensely social animal, forming strong associations with members of its herd and possessing a keen ability to recognize subtle social cues. These instinctive behaviors form the basis of...

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Railroad

Railroads are paths of parallel metal rails that allow a wheeled vehicle to move more easily by reducing friction. Iron rails were first used in the early 1800s to guide horse-drawn wagons. After the invention of the steam locomotive in 1804, steam engines replaced horses as the primary means of power. Modern locomotives commonly use electric motors or diesel engines and pull long trains of passenger or freight cars. The benefits of rail transportation in both speed and carrying capacity made it superior...

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Transportation

Transportation, movement of people and goods from one location to another. Throughout history, the economic wealth and military power of a people or a nation have been closely tied to efficient methods of transportation. Transportation provides access to natural resources and promotes trade, allowing a nation to accumulate wealth and power. Transportation also allows the movement of soldiers, equipment, and supplies so that a nation can wage war. Transportation systems and the routes they use have greatly influenced...

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