Answer:
I am so sorry I just answered because I need points for my exam
It was both a failure and a success
The reason why northern cities saw in increase in population after the american civil war was: the flight of former slaves from the south
Following the american civil war, people in southern states still treated the ex-slaves that freed by abraham lincoln very poorly. To escape this treatment, the former slaves decided to flight to the northern states in hope for better societal treatment and job opportunities.
He borrowed ideas from John Locke
