When was the slave system introduced to virginia?

The slave system was introduced to Virginia in 1619 to aid in production of crops.

Nm-us history and geography

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.