Based on the map, why might some southerners feel the Missouri compromise favored the north

Some southerners might feel that the Missouri Compromise favored the north because it allowed for the admission of Maine as a free state, balancing the addition of Missouri as a slave state. This could be seen as a way for the north to increase its influence in Congress and potentially pass laws that were more favorable to their interests. Additionally, the Compromise established a line (36° 30' parallel) limiting slavery in newly acquired territories, which could be viewed as restricting the expansion of slavery and benefiting the northern states. Overall, these factors might lead some southerners to believe that the Missouri Compromise was more favorable to the north.