Cultural Relativism vs. Cultural Absolutism

I defend cultural relativism against the following objections: (i) The analogy between motion and morality is flawed. (ii) Cultural relativism has greater potential to be harmful to our daily lives than is cultural absolutism. (iii) We made moral progress when we moved from slavery to equality. (iv) There are some moral principles that are accepted by all cultures around the world. (v) Moral argumentation is impossible within the framework of cultural relativism. (vi) We construct arguments for and against cultures.