Why did the US want Industry?

Many factors combined to produce this burst of industrial activity. The exploitation of Western resources, including mines and lumber, stimulated a demand for improved transportation, while the gold and silver mines provided new sources of capital for investment in the East. The construction of railroads, especially in the West and South, with the resulting demand for steel rails, was a major force in the expansion of the steel industry and increased the railroad mileage in the United States from less than 93,262 miles (150,151 kilometres) in 1880 to about 190,000 miles (310,000 kilometres) in 1900.

Explanation:

b)

it created free trade throughout the colonial territories.

well first we can compare on what the slave masters ate and what the slaves ate well the masters ate fancy great food like chicken rice mash potatose and stuff like that and slaves ate well food that your not suppost to eat like the weird parts of turkey and chicken and slaves master chilled beat and eat and slaves work get beat and get little of sleep there you go