Which party was against the spread of slavery?

Republicans were that party that were against the spread of slavery.

The 4th of july  your welcome

The question of what caused the full effects of the radical stage, also called the second french revolution by some historians, which shook the political and social reforms in france have caught the attention of many scholars, particularly because of principles implemented during this stage which is contradictory to the fundamental principle of the french revolution itself, by using dictatorship to create equality.