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–France relations Hollande paid a visit to Chad. France maintains an air force base at N'Djamena International Airport where it has launched humanitarian and counter-terrorism missions to the Central African Republic, Mali and Niger. In 2016, total trade between Chad and France amounted to €211 million Euros. Chad's main exports to France are primarily Gum arabic and oil. France's main exports to Chad include: medicine, flour, cereals, electronic equipment and automobiles. French multinational companies such as Air France, Le Méridien, Novotel, Société Générale and Total S.A. operate in Chad. Chad–France relations Chad–France relations refers to the diplomatic relations between the Republic of