Trains accelerated the speed at which products moved from farm to consumer in the 19th century. However, for a railroad route to be economical, that is, for the cost of building the route to be recouped by the goods sold by building the track, it must follow a specific terrain.
Topography is basically how the land rises and falls with hills and valleys and how it slopes to allow streams and rivers to flow. By studying railroad topography and planning optimal routes around geographical obstacles, manufacturers can use railroads to deliver their products to buyers in different regions of the country in a cost-effective and efficient manner and could get more profit.
The Story of Exploration and Trade is a study of how people overcame geographical differences to provide for themselves and their families. The first migrations began in North Africa. The area became overcrowded, and hunter-gatherer societies needed vast tracts of land to support themselves. There they moved north into modern Europe and east into Asia, establishing trade routes along the way.
Learn more about Geography development here:-https://brainly.com/question/18591233
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