Northern Region, Nigeria patches of grass and sand, found in the northeast. In the Sahel region, rain is less than 20 inches (508 mm) per year and the Sahara Desert is encroaching. In the dry north-east corner of the country lies Lake Chad, which Northern Nigeria shares with Niger, Chad and Cameroon. Northern Nigeria is divided into 18 provinces: Kano, the largest of the provinces in terms of population and economy is in the North-Central part of the country. The Kano Native Authority an offshoot of the fula Kano Emirate inherited the ancient trade industries that fuelled the trans saharan trade with North
Chad–Cameroon Petroleum Development and Pipeline Project which provided $46.6 million to finance Cameroon and Chad's equity in COTCO and TOTCO. Included in plans for the project was a revenue management law developed by the World Bank. This separated the oil revenues given to Chad into four required areas: a Future Generations Fund, health, education and other development projects, a fund to compensate the Doba region of Chad from where the oil was extracted and government reserves. The revenue management law also created the Petroleum Revenue Oversight Committee, which oversees how the oil revenues are spent, and includes members of both the Chadian government and civil society.