The kush empire was established in the 1070 BCE and fell around 350. CE according to the timeline the empire reign took place during which two eras

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.

I'm pretty sure that's called a volcano