Powell v. Moody was a court case that happened a long time ago in America. It was about two people who disagreed about property that they both wanted to own.
Imagine you have a toy that you really like playing with, but your friend also likes it and wants to play with it too. You both want to have the toy all to yourselves. That's what happened in Powell v. Moody.
Powell and Moody both said that the land in question belonged to them. Powell said that Moody sold the land to him, but Moody said he never did. It was like they both wanted the same toy.
They went to court to solve the problem. The judge listened to both of them and looked at all the evidence (like papers and documents) they had. The judge then had to make a decision about who really owned the land.
In the end, the judge decided that Powell owned the land. But, Moody was still unhappy with the decision and he appealed to a higher court.
The higher court looked at the case again and said that Powell didn't have enough evidence to prove that he really bought the land from Moody. So, the higher court said that Moody was the real owner of the land all along.
This case shows us that when two people can't agree on something, they might need to ask a judge to decide. The judge looks at all the evidence and makes a decision based on what they think is fair.