The Missouri Compromise established which as a precedent?

Question

(1 point)
Responses

adding slave and free states equally to keep the balance of power
adding slave and free states equally to keep the balance of power

using popular sovereignty as the deciding factor on the legality of slavery
using popular sovereignty as the deciding factor on the legality of slavery

promoting the expansion of slavery to support the South
promoting the expansion of slavery to support the South

applying its compromise decision to all territories and future states
applying its compromise decision to all territories and future states

Answer 1

applying its compromise decision to all territories and future states