With the end of the Civil War came a great transition into a mechanized and factory-based economy, which took workers away from the farms and put them into the factories. Many people saw this is corporate great, which was in some ways true--this led to the formation of many unions and workers organizations.
Wastewater discharge from hydroelectric power plants" is the correct answer
This was before the time of government oversight, so businesses disposed of hazardous materials in very damaging ways.
It didn't leave it stronger but built it to become better than what it was, it started to build amendments for all people but it started the industrial revolution in u.s
The main attraction was the possibility of having slaves, since the owners of farms needed cheap and very abundant labor. Precisely this great attraction of owning slaves and being able to cultivate enromes quantities of land, was what would lead to the American Civil War; being the slavery, the first reason of the great growth of the southern wealth, thanks to its enormous plantations of cotton and tobacco; but after the war, this was the reason why the southern states suffered economic crises and had to request loans from the Federal Government for reconstruction; also that the very loss of the slaves led to the economic problems of the South.