"<span>d. The ruling undermined the idea of free labor and supported slave labor." would be the best option from the list, since the ruling stated that blacks did not have rights and therefore could not sue for freedom in court.</span>
Answer: he went it so he knew what he was talking about. So they couldn't just say you weren't a slave you don't know what you're talking about.
Explanation:
The President was Harry Truman