What was the primary concern for the Missouri statehood question?

The primary concern for the Missouri statehood question was the issue of slavery. When Missouri applied for statehood in 1819, it sparked a contentious debate in Congress about whether to allow it as a slave state or a free state. This conflict highlighted the growing sectional tensions between the North and South, ultimately leading to the Missouri Compromise of 1820, which sought to maintain a balance between free and slave states. The situation underscored the deep divisions in the nation regarding the expansion of slavery into new territories.