What provided a plan for gorverning western territories?

It was the Northwest Ordinance that provided a plan for gorverning western territories, since it was thought that this would help the United States expand in a peaceful and organized manner. 

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.