What was the name given to the trade system where finished manufactured goods were sent to africa in exchange for slaves who were sent to the americas in exchange for common goods that would finally be returned to the home country

The name given to this trade was the Triangular Slave Trade. I apologized for the extremly late and short answer. If you need more information, simply ask. 

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.