Columbus and slavery

How are columbus and slavery linked and how do both create racism? Be specific in explaining how columbus revolutionized race relations and transformed the modern world? Remember to explain the origins of racism and slavery's two legacies (Loewen). How does our continued study of Columbus perpetuate racist ideoligies of domination and diversity in American history? How do historical examples of racism impact culture today?

This is a study guide for my final tomorrow and i cant figure out this question