Answer:
One reason why white workers in the north tended to dislike the southern institution of slavery is that it created a two-tiered labor system in which white workers were paid less than slaveholders. This created resentment among white workers who felt they were being exploited. Additionally, the northern white workers were also competing with slave labor for jobs, which further drove down wages. The institution of slavery also created a class of wealthy slaveholders who were seen as exploiting the poor and working class.