In the decades before the Civil War,the South _________________________.

A) opposed the extension of slavery into the territories
B) supported the extension of slavery into the territories
C) cooperated with the North to establish both free and slavery territories
D) None of the choices are true

The South supported the extension of slavery into the territories, as they saw it as necessary to maintain their way of life and economic systems that depended on slave labor. They feared that the growing number of free states would upset the balance of power in Congress and threaten the future of slavery in the South. This led to tensions with the North, who opposed the spread of slavery and argued for free territories.