Answer:
Option: The decision strengthened the institution of slavery.
Explanation:
The Dred Scott decision supported by the South because it strengthened the institution of slavery. Slavery was the backbone of the South economy. Slaves were considered as property in the South and held captive and forced to work in plantations. The decision of the Supreme Court supported by the southerners because they always believed the North had no right to interfere with matters related to slavery.
