Basically, the federalist wanted a stronger central government while the Republicans wanted a weaker one.
Friedrich engles, though from a well to do family, established himself as a :
Revolutionary
He founded Marxist theory together with Karl marx
hope this helps
One bieng the reconstruction (where they rebuilt the south) another would be the transition from slave labor to modern industeial things like the textile and some had to change thier whole lifestyle based on wht happened
They were able to promote economic growth because of the Industrial Age. During this age people were need to operate machines. Thus, when these workers were paid, their money went out to the economy. Also, when the items they made were sold, this money went to the owners.