The U. S. Supreme Court ruled in the Slaughterhouse Cases that:

a. voting rights of African-Americans under the Fifteenth Amendment could not be abridged or denied by any state.
b. states could not interfere with vigorous federal enforcement of a broad array of civil rights guaranteed by the Fourteenth Amendment.
c. most rights of citizens were under the control of state governments rather than the federal government.
d. Reconstruction had progressed too far and was now officially ended.
e. the federal government had sole authority under the Commerce Clause to regulate the meatpacking industry.

c. most rights of citizens were under the control of state governments rather than the federal government.

Explanation:

The slaughter case is one of the historic case in the history of America. It took place in the year 1873.

It is basically a series of the Supreme court cases which rendered effectively of the 14th amendment which provided equal rights to all.

Even though the 14th amendment protected the equal rights of the blacks but it fails to provide the economic privileges which was guaranteed to them.

It also allowed the state legislatures to suspend all the blacks' legal as well as civil rights which is outlined in the Constitution. Thus it came under the control of the state government.

propioception;