Worthful Donald added
They have expensive precious stones like Gold, Diamond and Sapphire in those regions. Bokoharam and bandits were created by their elites to hijack those locations and mine them for those elites. This is the truth they hid from Nigerians. The oil in the south belong to Nigeria but the mineral resources and stones in the north belong to the northern elites alone. a gram of Sapphire ranges between 60,000 to 160,000k based on their quality. Blue sapphire is more expensive, Zamfara has the best quality of stones.