C is the answer you’re needing
After the war he became a national hero, and the Republicans nominated him for president in 1868. A primary focus of Grant's administration was Reconstruction, and he worked to reconcile the North and South while also attempting to protect the civil rights of newly freed black slaves.
I believe it's the tenth amendment.
The person that is being described above is J.P. Morgan and the answer for this would be option B. J.P. Morgan was the known "robber baron" who consolidated Carnegie steel and the national steel company into U.S. Steel in the year 1901. Hope this answers your question.