In his 1975 study, "The Notion of the Tribe", anthropologist Morton H. Fried provided numerous examples of tribes the members of which spoke different languages and practised different rituals, or that shared languages and rituals with members of other tribes.
In his 1975 study, "The Notion of the Tribe", anthropologist Morton H. Fried Morton H. Fried 1972 "The Notion of Tribe". Cummings Publishing Company, provided numerous examples of'tribes' the members of which spoke different languages and practised different rituals, or that shared languages and rituals with members of other tribes.