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
Chad–Cameroon Petroleum Development and Pipeline Project human trafficking. Oil exploitation is estimated at a potential 1.5 billion barrels, and Chinese companies are currently developing an oil refinery and another pipeline in the country. The Tchad Oil Transportation Company (TOTCO) manages the pipeline within Chad that is owned by the country. TOTCO is incorporated in Tchad, and is a joint venture between Chad and the Upstream Consortium. The Republic of Cameroon has been ruled by President Paul Biya since November 6, 1982. A relatively peaceful and stable nation, Cameroon is a republic with a multiparty presidential regime. Although there are presidential elections every seven years, there are