The kansas nebraska act had enraged many people who opposed the extension of slavery because it repealed the

The Missouri Compromise of 1820, I think. 

Opposition to the nra came to a head in 1935, when the conservative supreme court declared the agency unconstitutional, claiming the nra gave the executive branch regulatory powers that belonged exclusively to congress. this decision began a series of court decisions that overturned key elements of the new deal.

Your answer is b , public works