Explain how the united nations assist people during times of war.

The united nations have different committees. theres the world health organization, international criminal court, the committee dedicated to refugees, and many other ones. the representatives from each nation gather in their committees and debate on resolutions to the current crisis. each committee focus's on a different part of the crisis

They provide food and shelter, also may set out refugees for people who are lost, no family, no hime

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.