Who attacked the wolof tribe of africa

There were a couple of groups that had attack the Wolof tribe of africa, but one of the groups i can come up with off my head is Fula peopleSorry if this didn't help...IF you need anymore info look up the Fula people and you should be able to find some more info on different groups who attacked the tribe. 

Well besides the Fula another country that attacked the wolof tribe was the French. Sorry of this isn't the answer your looking for.

River valleys were good places for hunting and fishing.