Why was john brown sometimes called the "avenging angel"?

He was extremely vicious in his fighting for abolition. He would attack and kill people who supported slavery. The angel part comes from the saving slaves, the avenging comes from his ruthless attitudes.

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.