Quote Originally Posted by KingJaja View Post
In Nigeria's case it is not a question of whether, but when and how.

Look at this map:

[snip] to save space

On overlay of ethno-linguistic groups and political boundaries (the definitions here are pretty broad).
Very, very broad.

Take the case of 'little' Malawi for instance. (from here)

Malawi's population is made up of the Chewa, Nyanja, Tumbuka, Yao, Lomwe, Sena, Tonga, Ngoni and Ngonde native ethnic groups, as well as populations of Asians and Europeans. Major languages include Chichewa, an official language spoken by over 57% of the population, Chinyanja (12.8%), Chiyao (10.1%) and Chitumbuka (9.5%).

Other native languages are Malawian Lomwe, spoken by around 250,000 in the southeast of the country; Kokola, spoken by around 200,000 people also in the southeast; Lambya, spoken by around 45,000 in the northwestern tip; Ndali, spoken by around 70,000; Nyakyusa-Ngonde, spoken by around 300,000 in northern Malawi; Malawian Sena, spoken by around 270,000 in southern Malawi; and Tonga, spoken by around 170,000 in the north.
There remains significant ethnic 'awareness' in Malawi which is reflected in voting patterns to this day.

The smaller groups within Malawi are often found in larger number just across the border. Inside the country their areas are often fairly accurately demarcated by 'district' boundaries.

If there was the will...