Nigeria has the largest population of any country in Africa (about 120 million), and the greatest diversity of cultures, ways of life, cities and terrain. Nigeria shares its international border of 4,470 km (2513 mi.) with four neighbors: Chad, Cameroon, Benin, and Niger.
Until 1989 the capital was Lagos, with a population of about 2,500,000, but the government recently moved the capital to Abuja.
Later, other groups such as Shuwa-Arabs, the Tuaregs, and the Fulanis, who are concentrated in the far north, entered northern Nigeria in migratory waves across the Sahara Desert.
The earliest occupants of Nigeria settled in the forest belt and in the Niger Delta region.
Near the coast, the seasons are less sharply defined.