Which of the following statements BEST explains why tensions between Northern and
Southern states over the slavery issue increased during the antebellum period?
A. the rise of abolitionist groups in the South promoted the anti-B.slavery movement in the South
constant battles in Congress over whether new states in the West should be slave or free
C. Northern states attempted to promote European immigration to compete with Southern slavery
D. conflicts between Congress and various presidents over who had power to regulate slavery