Based on the map, why my some southern are southern Missouri compromise favored the north

A) there there was foreign threat south of the line
B) there was less farmland south of the line
C) there was more territory north of the line
D) there was more freshwater north of the wine

C) there was more territory north of the line

The Missouri Compromise of 1820 established a line (36°30′ parallel) across the Louisiana Territory, with slavery prohibited north of the line and allowed south of it. Since there was more territory north of the line, this favored the North as it would potentially become free states while the South would have less land available for slavery.