the answer is c i submitted it so i can get answer
Answer: <em>Principle of enlightened self-interest</em>
Explanation:
Under discipline such as philosophy the principle of enlightened self-interest is referred to as a philosophy under ethics that tends to states that an individual who act or proceeds to further interests of individuals other than his/her, ultimately serving his/her own interest. At times it has been simply expressed as the belief that a person, commercial entity or group will tend to do something well there by doing something good.
True because they traded these items for horses, books, swords and chain mail.