Ok well all of them affected migration because each of them were able to expand outward from the thirteen colonies. This is because each was usually for trading, but eventually turned into people being able to travel. The National Road, or Cumberland Road, was the first highway built by the federal government. Though canals offered tremendous advantages over land shipment, they could not compete with the efficiency and flexibility of the railroad. With improved methods of transportation came the concept of Manifest Destiny.
Your main 3 transportation routes are:
National Railroad
Baltimore and Ohio Railroad
Erie Canal
