How did the end of the u.s. civil war affect american politics?

 Best   The civil, along with the great losses in the hundred thousands, also left great devastation in the north and the south. The north had to revert to industry before the whole thing started. The north used industry for military production a d mass produced the items most needed like weapons, clothing, and the sort. 
By the end of the War the north also had a vast amount change that occurred during the war that still helped greatly. The north had railroads and telegram lines that spanned the whole union. It used the railroads as a way to move troops places that would have taken months in in,y seven days. After the warthe north used these tracks mainly for trade and goods for profit. The telegrams Allowed for the fast travel of messages to and from completely opposite areas in the union, and after threat help led create stability. 
Doen in the south, things weren't so great. The soldiers all had to return home where if they were slave holders they had to watch as there slaves left and they had to pick the fields and clean the cotton themselves. 
The slaves also had great nteiuble in society after the war was over. They still couldn't get rights and they were forced to take the worst jobs and were still accused for wring doings. Things did nit change much for the black people's except that they were free

 I believe that the answer is Unsafe tenements.