I am trying to find the answer to this riddle and I cannot figure it out. Here it is: A man made it. A man brought it. But he could not see it. What is it?

Did you mean "bought" it or "brought" it? If it was bought it, it would have to be a blind walking cane or white cane. It might not be the answer you are looking for, but it works! Or possibly transplanted eyes.

Is it peace? He made peace, he brouht peace but peace is a state of being not something you can physically see