What was the name given to the network of people dedicated to escaped slaves get to free territory?

The correct answer is the Underground Road! 
The Underground Road was a network of safe houses and secret routes in 19th century that the slaves could use to escape to the north or to Canada. People helping the slaves were both black and white and both free and slaves were helping too!

Underground Railroad

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.