Nigeria Sudan savannah is similar but with shorter grasses and shorter trees. Sahel savannah consists of patches of grass and sand, found in the northeast. In the Sahel region, rain is less than per year and the Sahara Desert is encroaching. In the dry northeast corner of the country lies Lake Chad, which Nigeria shares with Niger, Chad and Cameroon. Nigeria's Delta region, home of the large oil industry, experiences serious oil spills and other environmental problems, which has caused conflict. Waste management including sewage treatment, the linked processes of deforestation and soil degradation, and climate change or global warming are
History of Chad fighting. UN has said that up to 20,000 people left the region, taking refuge in nearby Cameroon and Nigeria. Hundreds of people were killed, mostly civilians. The rebels accuse Deby of corruption and embezzling millions in oil revenue. While many Chadians may share that assessment, the uprising appears to be a power struggle within the elite that has long controlled Chad. The French government believes that the opposition has regrouped east of the capital. Déby has blamed Sudan for the current unrest in Chad. History of Chad Chad (; ), officially the Republic of Chad, is a landlocked country in