What did Nicolaus Copernicus mean in his quote? “To know that we know what we know, and that we do not know what we do not know, that is true knowledge.”

Forty years later, the fall of saigon remains a pivotal and emotional event to many. you will now conduct research to find two find two different representations of this historical event. first, you will find an image connected to the fall of saigon. then, you will find a second source of your choosing that represents the same topic