Respuesta :
B. higher population throughout the western territories
Higher population throughout the western territories has the most effect in the 1800s. As It also shows roads, trails, and railroads of the same time period.
Why were roads important in the 1800s?
The construction of the roads were essential at that time as the farmers has to go to sell their crops to the market, and it was difficult to go on the rough roads. American who are travelling long distance has to take halt in the roads.
Thus, option B is correct.
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