trains
Harriet Tubman
George Westington had 361 patents over his coarse of life, many of which helped the growth of electricity,with the use of power and transportation, and the railroad system. All his inventions benefited the industry as a whole
the river system
technologies might help later on like the system in cuniform and on the rules and laws
Railroads played no more than a secondary role in the nations transportation system in the 1820's-30's. Railroads became the primary transportation system of the United States and they remained so until the constriction of the interstate highway system in the mid twenth century. It emerged from a combination of technological and entrepreneurial innovations, included inventions of tracks, steam power locomotives and developement of railroad cars.
Harriet Tubman
George Westington had 361 patents over his coarse of life, many of which helped the growth of electricity,with the use of power and transportation, and the railroad system. All his inventions benefited the industry as a whole
Plow and irrigation system
Many people did so, from Stephenson to Brunel
the river system
the river system
The Underground Railroad was the name of the system that helped runaway slaves escape to freedom in the northern states and Canada. It was a network of routes and safe houses operated by abolitionists and sympathetic individuals.
In the US it was called the Underground Railroad
The Underground Railroad was the name given to the system by which escaped slaves from the South were helped in their flight to the North. It is believed that the system started in 1787. The Underground Railroad was at its height between 1850 and 1860.
D.It was a secret system which helped slaves escape to reedom.
Yes, they used a system of safe-houses to help them escape into Canada.
Over 300 slaves safely fled the South by using a system known as the Underground Railroad.