The Columbia Encyclopedia, Sixth Edition. 2001-07.
Swahili
(swäh´l) (KEY) [Arab.,=coast people], name for some of the inhabitants of the Kenya, Tanzania, Somali, and Mozambique coasts, Zanzibar, and E Congo. Descendants of black Africans and Arab traders (who came to the E African coast about A.D. 500), the Swahili do not form a cohesive ethnic group but are loosely united by common economic pursuits (especially trade), by cultural traditions, and particularly by the use of the Swahili language.