Crusoe does a whole lot of thinking about other cultures over the course of the novel. Because he is a man of trade, he comes into contact with many, many different cultures. He must figure out his relationship to the natives of the islands. He also thinks about former occupants, such as the Spanish, whose harsh treatment he condemns. What does it mean to be an Englishman? How do Englishmen like Crusoe see themselves in relationship to "others"?
This book suggests that European culture is superior to other non-Western cultures.
Robinson Crusoe suggests that cultures should be regarded relatively, on their own terms.