Freedom, the power to determine their own destiny in the black community
Under the Missouri Compromise on 1820 Missouri got in to the Union as slave state to compromise the balance between slave and non-slave states yet on August 10,1821 the Union restricted the importation of slaves in to Missouri when it became the 24th state.
It is roughly between 1 million and 2 million people <span />
I don't know fully so I'll narrow it down to two answers.
B and D, I'm sorry for not giving the correct answer