Best Colleges for African History

I'm a sophomore right now in History/Education going to the University of Toledo in the United States. I've recently been looking ahead, and I would like to attend a university that has a strong program and strong credentials in African History, an area I would like to specialize in.

Here is what US News and World Report has to say:

History Specialty Rankings: African History

Ranked in

1	Northwestern University Evanston, IL
2	University of Wisconsin--Madison Madison, WI
3	University of California--Los Angeles Los Angeles, CA
4	University of Michigan--Ann Arbor Ann Arbor, MI
5	Yale University New Haven, CT
6	Johns Hopkins University Baltimore, MD
7	Stanford University Stanford, CA
8	University of Minnesota--Twin Cities Minneapolis, MN
9	Emory University NA, GA
10	Indiana University--Bloomington NA, IN

Now, does anyone here have a recommendation for me, either from this list or from their own knowledge/experience? It doesn't have to be in the United States, either.

Thanks!