The Missouri Compromise established which as a precedent?

Question

1. adding slave and free states equally to keep the balance of power
2. using popular sovereignty as the deciding factor on the legality of slavery
3. promoting the expansion of slavery to support the South
4. applying its compromise decision to all territories and future states

Answer 1

The Missouri Compromise established the precedent of 1. adding slave and free states equally to keep the balance of power. It aimed to maintain a balance between slave states and free states in the Senate by admitting Missouri as a slave state and Maine as a free state, thereby attempting to sustain political equilibrium between the two regions.