What was one of the factors that motivated nations to abolish slavery? A- slavery was no longer profitable

B- industrialists wanted to gain economic advantage over slave- owning classes

C- there was no longer support for slavery

D- The Catholic Church condemned slavery

A. slavery was no longer profitable

Explanation:

During the industrial revolution, American businesses started to used modern machines to replace the existing manual labor.  This made using slaves no longer as profitable as it used to.

As a result, people started to give support to abolish slavery. But this support tend to be coming from the northern states. At that time , the southern states were not as willing to adopt the technology from the industrial revolution.  This made the southern states still reliant on slaves. This what caused the conflict that lead to the civil war.

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