Black Freedom Struggle in the United States:

An Act to authorize the people of the Missouri territory to form a constitution and state government, and for the admission of such state into the Union on an equal footing, with the original states, and to prohibit slavery in certain territories

An Act to authorize the people of the Missouri territory to form a constitution and state government, and for the admission of such state into the Union on an equal footing, with the original states, and to prohibit slavery in certain territories, 1820