The Ijaw people of pre-colonial Nigeria were organized into?

A.

Grades

B.

Clans

C.

Federations

D.

Chiefdoms

Correct answer is B

The Ijaw people of pre-colonial Nigeria were organized into clans. A clan is a group of people united by actual or perceived kinship and descent. In the case of the Ijaw people, these clans were often made up of several villages and communities that shared common ancestry.