Prior to the American Civil War, the main reason that the South did not develop an extensive system of railroads, such as was developed in the North, was geographical. Southern planters made use of the extensive river-ways, as well as the numerous ports on the Gulf Coast, to transport their goods by boat. In this, they were of course assisted by the "free labor" of their large slave-population.
the dialect system of learning
they developed an extensive system of paved stone roads
During World War 1 the United States government took control of all the railroads. This nationalized system was called The United States Railroad Administration.
unionization
reconstruction
Canals
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The most common reason is that the company needs to satisfy a unique business requirement.
Length is an extensive property.[ An extensive property of a system is directly proportional to the system size or the amount of material in the system, like mass and volume, but not: density or viscosity]
So they could have more transportation for goods and other useful items
Railroad.Vanderbilt controlled all the railroads by the 1800s. He amassed quite a lot of wealth through the system.
Railroads
An extensive property is a property that depends on the size or extent of a system. Examples include mass, volume, and energy.
The answer to this would be basically the same way as today. Canada has an extensive highway system, railroads and many airports. So all of the different modes of transportation that were available back then are still in use today.
Northern factories made products that were needed by the Union army. This include firearms. The Union's extensive railroad system allowed these products to reach the Union armies. Also, the railroads provided troop transport.
roads
Metro System