36 POINTS!!
Which of the following is one legacy from the empires of Mali and Songhai? MAKE SURE TO DO YOUR RESEARCH DON'T JUST PUT SOMETHING OR IM REPORTING AND GETTING MY POINTS BACK.

A.
The hajj was established as an Islamic tradition.

B.
The languages they established are still spoken today.

C.
Most West African nations have oral laws.

D.
Christianity has spread throughout West Africa.