Ipaliwanag ang naging kontribusyon ng United Nations para maayos ang gulo sa pagitan ng China at Pilipinas tungkol sa West Philippine Sea at iba pang mga islang malapit dito.

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.