The period between 1820 to 1861 dominated by what?

The period between 1820 and 1861 in the United States was dominated by growing tensions over slavery, territorial expansion, and the struggle for states' rights. The Missouri Compromise of 1820 and the Compromise of 1850 attempted to address the sectional conflict but ultimately highlighted the deepening divide. This era also saw the rise of abolitionist movements and increasing polarization between the North and South, setting the stage for the Civil War. Economic changes, including the rise of industrialization in the North and the agrarian economy of the South, further fueled these tensions.