Which group was most appeased by this provision in the compromise?

To provide an accurate answer, I need more context about the specific compromise you are referring to. However, in many historical compromises, such as the Missouri Compromise or the Compromise of 1850, it is often the case that pro-slavery factions or Southern states were appeased by provisions that allowed for the expansion of slavery or the return of escaped slaves. Please specify the compromise for a more precise response.