19 (A) The secessionists based their actions on two theories. (B) The fate of the Union was dependent upon several uncertainties surrounding the rapid development of secession in the South. (C) It was also believed that France would sympathize with the planting aristocracy and cooperate with Britain in aiding the Confederate government. (D) A proposal was made that the old Missouri Compromise line be drawn through the Western territories—with slavery on one side and freedom on the other.