Explain how transportation innovations of the time period affected migration patterns in the united states. 99 points ; ]

With the expansion of transportation, it was easier for people to travel westward, allowing the western-population to expand.

In the beginning, during the "Frontier" times, many people did not travel west, because it was dangerous, with diseases, Indian attacks, starvation, etc. However, with the creation of better transportation systems, more people moved westward to start a new life, and, if possible, strike it rich.

hope this helps

answer; /// i believe the correct answer is (b) disposition

answer; (trauma);