What role did the government play during the late 19th century, in promoting westward settlement and eastern industrial growth?

One can not under value the project that was the expansion of the rails westward in the post Civil War decade. This was considered a national  imperative as well as the overriding mood of the populous of the east to expand with the "Manifest Destiny" Goods had to be made, sold and transported west from the smoke-filled cities of the East

Certainly this amount of material and hardware had to come from the fire-blast furnaces of the East and Mid-west. The role of law makers, politicians and government was at each small twist in this slow yet never-stopping westward encroachment. Park lands were delineated, Indians were displaced and moved, herds of the indigenous buffalo were governmentally exterminated and the country would have a new thriving product and vitality often because of these newly exploited and dwindling resources. Most raw supplies would be reworked into a multitude of things in the factories of Chicago, New York, Buffalo and Saint Louis.