Search results
Results from the WOW.Com Content Network
People usually traded for raw materials such as tin, bronze, copper, iron ore, or animals. [8] An "intercontinental model" of world trade, "between 1500 and 1800 on the basis of interregional competition in production and trade" [9] was proposed by Frederic Mauro, but the early existence of it was already observed by Dudley North in the year ...
On the Move: A Visual Timeline of Transportation. Dorling Kindersley. ISBN 978-1-56458-880-7. Bruno, Leonard C. (1993). On the Move: A Chronology of Advances in Transportation. Gale Research. ISBN 978-0-8103-8396-8. Berger, Michael L. The automobile in American history and culture: a reference guide (Greenwood, 2001). Condit, Carl W.
The pavers allowed the Roman chariots to travel very quickly, ensuring good communication with the Roman provinces. Farm roads were often paved first on the way into town, to keep produce clean. Early forms of springs and shocks to reduce the bumps were incorporated in horse-drawn transport, as the original pavers were not perfectly aligned.
In the early years American railroads imported many steam locomotives from England. While the B&O and the PRR built many of their own steam locomotives, other railroads purchased from independent American manufacturers. Prominent among the early steam manufacturers were Norris, Baldwin and Rogers, [101] followed by Lima and Alco later in the ...
Turnpikes were also later built in the United States. They were usually built by private companies under a government franchise. Water transport on rivers and canals carried many farm goods from the US frontier between the Appalachian Mountains and Mississippi River in the early 19th century, but the shorter road route over the mountains had ...
Dr. Franklin, who called his invention the "armonica" after the Italian word for harmony, worked with London glassblower Charles James to build one, and it had its world première in early 1762, played by Marianne Davies. In this version, 37 bowls were mounted horizontally nested on an iron spindle.
The magnitude of the transportation problem was such that neither individual states nor private corporations seemed able to meet the demands of expanding internal trade. As early as 1807, Albert Gallatin had advocated the construction of a great system of internal waterways to connect East and West, at an estimated cost of $20,000,000. These ...
1886 Swift Safety Bicycle. Vehicles that have two wheels and require balancing by the rider date back to the early 19th century. The first means of transport making use of two wheels arranged consecutively, and thus the archetype of the bicycle, was the German draisine dating back to 1817.