The word civilized was applied to the five tribes because, broadly speaking, they had developed extensive economic ties with whites or had assimilated into American settler culture. Some members of these southeastern tribes had adopted European clothing, spoke English, practiced Christianity, and even owned slaves.
Swahili culture is the product of the history of the coastal part of the African Great Lakes region. As with the Swahili language, Swahili culture has a Bantu core that has borrowed from foreign influences.