Answer:
by the Roman Emperor Constantine
Explanation:
Philadelphia was great for trading and factories because <u>it was on a river,</u> located along the Delaware River and Schuylkill River, in the greater Delaware Valley.
People here in Philadelphia traded lumber, coal, furs, textiles, and bricks.
Philadelphia was a trade center for the colonies that based an important part of its economy on trade with the advantage that was located next to the river and had ports.
The great migration happened between 1916-1970 and was when 6 million African American were moved out of the Southern United States and to the urban Northwest, Midwest, and west
