For abolition: Abolitionist in the U.S., fugitive slaves. Against abolition: Cotton plantation owners of the Southern United States, slave traders
Explanation:
The term "abolition" is mainly used to describe the end of slavery. In the U.S. abolition was supported by abolitionists, this included all those who considered slavery was immoral or negative and wanted slavery to end. Moreover, abolition was supported by slaves and fugitive slaves who wanted freedom and knew slavery was related to unfair and cruel conditions.
However, abolition was not supported by everyone, especially not but those who obtained profits from slavery. This included plantation owners in the South because they used slaves to cultivate products such as cotton or tobacco or slave traders who obtained money by selling and buying slaves.