Peace,
Although Missouri has been culturally influenced by the South (and by the way so has most of the rest of the country), it's geographically in the Midwest - and is widely considered to be a Midwestern state by anyone familiar with a map of the nation. FYI, here's the Midwest:
Where is the Mason-Dixon Line?
Where is Missouri in relation to the Mason-Dixon Line?
Missouri is FIRMLY Southern. (Geographically) In fact the Missouri Compromise illustrates this point even further.
Throw in the fact that Missouri was definitely a slave owning state (Culturally) and you have a southern state.
The funny part is that Missouri hasn't wanted to be a Southern state for easily a hundred years. Let me rephrase this... the funny part is that the North never wanted Missouri to be a State at all (because in their mind Missouri was not a Northern State) while the South has always wanted Missouri to be a State (because in our mind Missouri was a Southern State).
The political conflict between the North and the South took definite form in 1819, when Missouri applied for admission into the Union to become a state. This application was made entirely in accordance with the requirements of the Federal Constitution, closely adhering to procedures established in the admission process of other states.
Problems started immediately. Because the territorial laws of Missouri recognized and embraced slavery,
Northern members of congress refused to approve Missouri’s application, while Southern congressmen fully backed Missouri for statehood. (We, The South, have been supporting Missouri for damn near a century) According to military historian Col. John C. Moore, a staff officer under Confederate generals Marmaduke and Mugruder,
congressmen representing the Northern states were the aggressors in this conflict over Missouri’s admission (Simply put, the North has NEVER wanted to have anything to do with Missouri), even though their position held no basis in the Constitution. The confrontations in the halls of congress over this issue were long and often heated. It was during this debate that tensions between North and South took center stage in United States politics, and Civil War became a distinct possibility.
Note: Not only is Missouri a Southern State but the fact that Missouri IS a Southern State DIRECTLY lead to the Civil War. War was brewing but Missouri being a Southern State AND being admitted as a State was the tipping point. In essence... y'all niggas responsible for the WHOLE DAMN CIVIL WAR! LOL!!! ahem... sorry. I digress.
After many intense arguments, Congress reluctantly passed the Missouri Compromise of 1820, resulting in Missouri being admitted into statehood in 1821. The Missouri Compromise established a boundary between the Free States and the Slave States. This boundary extended an existing line originally laid out to settle a 1750 border dispute between Pennsylvania and Maryland. It was referred to as the Mason-Dixon Line, named for the two British surveyors who established it in 1763-1767.
The Missouri Compromise held that Missouri would be admitted as a slaveholding state, but no slavery would be allowed anywhere else north of the Mason-Dixon Line. The Mason-Dixon Line runs west from Maryland to the Ohio River, then south along the river, finally turning west along latitude 36 degrees-30 minutes north, along the southern border of Missouri (including the “Bootheel,” even though it extends below the line).
The Missouri state legislature was infuriated at this because it imposed conditions upon Missouri which had not been imposed upon other states. Missouri became the only “Northern” state where slavery was legal. As a result, the Missouri legislature resolved Missouri would side with the South, further fanning the fuels of North-South conflict.