Slavery in America started in 1619, when a Dutch ship brought 20 African slaves ... in North America turned to African slaves as a cheaper, more plentiful labor ...
Decline of rural living, but sparked tremendous amounts of economic growth eventually. Early urbanization was filthy though, no proper sewage, overcrowded cities. So many people surged into these urban areas at one time, often not finding enough jobs for everyone.
Look the answer up on google and itll tell you .. Or safari
Answer:
Any form of a national border would be protected
Explanation:
This is due there to prevent any form of smuggling illegal goods.