Answer:
Option B) Machines were invented that could do work formerly done by people
Answer: When Walker's security was threatened under the Fugitive Slave Law of 1850, Lesley helped her move to Boston. There she found refuge with Lesley's cousin. Although safe at last, Walker was heartbroken. Running away meant an end to her life as a slave, but it also meant leaving behind her mother and three children.
Explanation:
the foreign community through the Cohong
I hope that's help.
They located in an area that traders could reach in a single season.