The biggest one was for the freedom of religion. also the idea of the American dream. being able to go somewhere and make your name. the west meant opportunities as well as gold
So here are the answers to the given questions above.
1. The reason that the Missouri compromise did not have a lasting effect was that, it relied on popular sovereignty. The answer for this would be option C.
2. The Free-Soil Party would most likely agree with manifest destiny. The answer would be option B.
Hope these are the answers that you are looking for.
