To what degree did the United States containment strategy in the early years of the Cold War accord with realism? Did it ever into idealism in any ways?

Dpolitical is the answer

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.