I'm pretty sure the role of the Federal Government is to make sure that the domestic policy wants well and if they do not then they find answers to their questions problems but I'm not sure search for more answers
Because it was harder to travel over moountains.
The First Dragoon Expedition of 1834 (also called the Dodge-Leavenworth Expedition) was an exploratory mission of the United States Army into the southwestern Great Plains the United States. It was the first official contact between the American government and the Southern Plains Indians.