This three part series examines the facts behind a common assumption for most of recorded history: that human beings can be divided into racial groups. This episode reviews the sociological bases for the idea of race, particularly at the European conques t of the Americas. The origins of the concept of white supremacy and how social inequality became "natural" are described. Written, produced and directed by Tracy Heather Strain; narrated by CCH Pounder. See also DVD, AT # 67814. Closed captioned .