6. What was one major problem the United States faced at the close of the Civil War?
A) The rebuilding of home, buildings, and railroads in the Union
States
B) Integrating former Confederate states back into the Union
C) The overproduction of cotton and drop in prices
D) The Democratic Party gained control of the House of
Representatives

Reconstruction and Rights When the Civil War ended, leaders turned to the question of how to reconstruct the nation. One important issue was the right to vote, and the rights of black American men and former Confederate men to vote were hotly debated. The Travails of Reconstruction The aftermath of any war is difficult for the survivors.

Explanation:

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.