Post-war juridical sovereignty has been hell of a drug. For a region with a lot of weak states and so-called “artificial borders” Africa has seen almost no substantial revision of state boundaries or the creation of new states (and not for lack of irredentist and secession movements…)
Only South Sudan and Eritrea have managed to successfully secede and gain international recognition. Somaliland comes close. And while the Sahrawi Republic is recognized by the African Union, it still lacks robust international recognition. Apartheid South Africa stands out as the only state to voluntarily reorder its geographical integrity by creating new vassal statelets within its domain for its own racist ends.
H/T Paul D. Williams