Black Americans are those persons in the United States who trace their ancestry to members of the Negroid race in Africa. They have at various times in United States history been referred to as African, coloured, Negro, Afro-American, and African-American, as well as black. The black population of the United States has grown from three-quarters of a million in 1790 to nearly 30 million in 1990. As a percentage of the total population, blacks declined from 19.3 in 1790 to 9.7 in 1930. A modest percentage increase has occurred since that time. Over the past 300 and more years in the United States, considerable racial mixture has taken place between persons of African descent and those with other racial backgrounds, mainly of white European or American Indian ancestry. Shades of skin colour range from dark brown to ivory. In body type black Americans range from short and stocky to tall and lean. Nose shapes vary from aquiline to extremely broad and flat; hair colour from medium brown to brown black; and hair texture from tightly curled to limp and straight. Historically, the predominant attitude toward racial group membership in the United States has been that persons having any black African ancestry are considered to be black. In some parts of the United States, especially in the antebellum South, laws were written to define racial group membership in this way, generally to the detriment of those who were not Caucasian. It is important to note, however, that ancestry and physical characteristics are only part of what has set black Americans apart as a distinct group. The concept of race, as it applies to the black minority in the United States, is as much a social and political concept as a biological one. Blacks Under Slavery: 1600-1865 The first Africans in the New World arrived with Spanish and Portuguese explorers and settlers. By 1600 an estimated 275,000 Africans, both free and slave, were in Central and South America and the Car...