How did the supreme court uphold slavery? by denying citizenship by determining guilt by declaring slavery laws legal by defining residency

The correct answer is: By denying citizenship.

This happened in Dred Scott legal case in the Supreme Court on March 6th, 1857, it was ruled that a slave that who had resided in a free state and territory was not entitled to his freedom, in this case referring to Dred Scott. The Supreme Court stated that no African American could be a citizen of the United States. With this decision began the controversy to civil war.

president franklin roosevelt supported the tva as part of his first new deal measures approved by congress in 1933. this new agency was designed to control floods, produce electric power, and improve the lives of people living in the tennessee valley. the tva accomplished many of these goals despite problems.

if i am correct the answer is going to be a) the federal program of reconstruction ended.