How was the U. S. Constitution changed to proteHow was the U. S. Constitution changed to protect people's rights?ct people's rights?

Amendments such as the Bill of Rights were added (1-10)

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.