How This State Entered The Union

Statehood is where constitutional structure meets regional history: the point where a place entered the Union as an equal state.

Admission To The Union

Missouri became the twenty-fourth state on August 10, 1821, in the aftermath of the Missouri Compromise.

Path To Statehood

Its route ran through territorial organization and population growth, but admission was shaped above all by the national argument over slavery and sectional balance.

Why It Matters

Missouri matters because its admission made clear that statehood was not just a local matter. It could reshape the whole national political balance.