HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 1. Which political idea advocates for individual states being allowed to choose whether to allow slavery or not?



2. How did the U.S. Congress ensure the balance of power between slave and free states when Missouri wanted to join the Union as a slave state in 1820?



3. How did the Missouri Compromise address the issue of the expansion of slavery into western territories?