4. Republic of Congo
We are continuing our list of most ethnically diverse countries in the world in 2018 with the Republic of Congo which is very ethnically diverse. The population is comprised of four major ethnic groups which are The Kongo (which makes up for 48% of the entire population), Sangha, Teke, and M’Bochi. These major ethnic groups comprise more than 40 tribes according to Nations Encyclopedia. As for the non-African communities, a certain number of Europeans were present, mostly French but this was before the civil war.