[Solved] In order to obtain slaves for sale to Europeans, local African rulers frequently raided defenseless villages in search of unsuspecting victims. Sexual Arousal: The physiological and emotional response of the human body to sexual stimuli, which includes physical and psychological changes. Bisexual Attraction: A sexual orientation characterized by the ability to experience sexual, emotional, or romantic attraction to people of both one's own and other genders. Erotic Plasticity: The degree to which an individual's sex drive and erotic responses can be shaped by cultural, social, and situational factors. Origins of Sexual Orientation: The factors contributing to a person's emotional, romantic, or sexual attraction to individuals of the same sex, opposite sex, or both.