What does n scott momaday mean when he describes christopher columbus's voyage as a "passage from the middle ages to the renaissance?

Christopher Columbus's voyage was described as a "passage from the middle ages to the renaissance" because it stripped away false beliefs and discovered new facts and truths that debunks what others have believed to be true for a long time.

Christopher Columbus traveled a path that has not been treaded on before. His voyage of discovery brought together the peoples of Europe, Africa, and America. Their interactions laid the foundation of multicultural America

He issued the emancipation proclamation. it started changing slavery, and eventually lead to the freedom of slaves.