Both were nomadic tribes which had moved slowly down from the north and east.
He spent three years living with a traditional nomadic tribe in Sudan.
After becoming separated from her family during the 11-year war, she was taken by a nomadic tribe in the East.
It operates very much like the social structure of a nomadic tribe.
Once in the not so distant past, a nomadic tribe wandered down South.
By the end of the 18th century only a few nomadic tribes had not converted to Christianity.
Nevertheless, all these nomadic tribes are of the same origin.
They made no stops, but that was nothing out of the ordinary for the nomadic tribes.
In old times, nomadic tribes often travelled and lived together.
They live in nomadic tribes ruled by a dominant male.