15th century Ethiopia would be a very impressive topic. Actually any African history pre colonization would be good. Can you do it on a person? Look up Ibn Battuta one of the most influential Islamic characters of all time.
Some example of college topics I have done,
Veermer's vision of peace in the 17th century dutch.
Alexander Pope's political/satirical career
Rasputin and the Russian Royal Family (if you want to do some weird freaky shit)
if you cant find something to do you are not looking really hard. My advice find narrow topic pretty much all of the topics mentioned are to vague and will cause an overload of information.