Why did Mao become a Marxist?
I don’t know

Holding that "political power grows out of the barrel of a gun", Maoism emphasizes the "revolutionary struggle of the vast majority of people against the exploiting classes and their state structures", which Mao termed a "people's war

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.