Slavery was abolished unilaterally, not as a reversal of the political polarization, and it could be argued that although the explicit practice of slavery is no

Slavery was abolished unilaterally, not as a reversal of the political polarization, and it could be argued that although the explicit practice of slavery is no longer polarizing, Jim Crow laws and their modern antecedents such as The Southern Strategy have been continually polarizing in American politics ever since. https://en.wikipedia.org/wiki/Southern_strategy https://en.wikipedia.org/wiki/Southern_strategy