Djolof
Two other major political entities were formed and grew during the 13th and 14th century: the Mali Empire and the Jolof Empire which become the vassal of the first in its heyday. Originating in the Mandinka invasion, Mali continued to expand, encompassing first eastern Senegal, and later almost all the present territory. Founded in the 14th century by the possibly mythical chief of the Wolof Ndiadiane Ndiaye, who was a Serer of Waalo (Ndiaye is originally a Serer surname