Little is known of the earliest history of Nigeria. most of the country was sparsely inhabited by persons who had a rudimentary knowledge of raising domesticated food plants and of herding animals. From c.800 B.C. to c.A.D. 200 the Nok culture (named for the town where archaeological findings first were made) flourished on the Jos Plateau; the Nok people made fine terra-cotta sculptures and probably knew how to work tin and iron. The first important centralized state to influence Nigeria was Kanem-Bornu, which probably was founded in the 8th cent. A.D., to the north of Lake Chad (outside modern Nigeria). In the 11th cent., by which time its rulers had been converted to Islam, Kanem-Bornu expanded south of Lake Chad into present-day Nigeria, and in the late 15th cent. its capital was moved there.

Beginning in the 11th cent. seven independent Hausa city-states were founded in N Nigeria—Biram, Daura, Gobir, Kano, Katsina, Rano, and Zaria. Kano and Katsina competed for the lucrative trans-Saharan trade with Kanem-Bornu, and for a time had to pay tribute to it. In the early 16th cent. all of Hausaland was briefly held by the Songhai Empire. However, in the late 16th cent., Kanem-Bornu replaced Songhai as the leading power in N Nigeria, and the Hausa states regained their autonomy. In southwest Nigeria two states—Oyo and Benin—had developed by the 14th cent.; the rulers of both states traced their origins to Ife, renowned for its naturalistic terra-cotta and brass sculpture. Benin was the leading state in the 15th cent. but began to decline in the 17th cent., and by the 18th cent. Oyo controlled Yorubaland and also Dahomey. The Igbo people in the southeast lived in small village communities.

In the late 15th cent. Portuguese navigators became the first Europeans to visit Nigeria. They soon began to purchase slaves and agricultural produce from coastal middlemen; the slaves had been captured further inland by the middlemen. The Portuguese were followed by British, French, and Dutch traders. Among the Igbo and Ibibio a number of city-states were established by individuals who had become wealthy by engaging in the slave trade; these included Bonny, Owome, and Okrika.

The Nineteenth Century

There were major internal changes in Nigeria in the 19th cent. In 1804, Usuman dan Fodio (1754–1817), a Fulani and a pious Muslim, began a holy war to reform the practice of Islam in the north. He soon conquered the Hausa city-states, but Bornu, led by Muhammad al-Kanemi (also a Muslim reformer) until 1835, maintained its independence. In 1817, Usuman dan Fodio's son, Muhammad Bello (d.1837) established a state centered at Sokoto, which controlled most of N Nigeria until the coming of the British (1900–1906). Under both Usuman dan Fodio and Muhammad Bello, Muslim culture, and also trade, flourished in the Fulani empire. In Bornu, Muhammad al-Kanemi was succeeded by Umar (reigned 1835–80), under whom the empire disintegrated.

In 1807, Great Britain abandoned the slave trade; however, other countries continued it until about 1875. Meanwhile, many African middlemen turned to selling palm products, which were Nigeria's chief export by the middle of the century. In 1817 a long series of civil wars began in the Oyo Empire; they lasted until 1893 (when Britain intervened), by which time the empire had disintegrated completely.

In order to stop the slave trade there, Britain annexed Lagos in 1861. In 1879, Sir George Goldie gained control of all the British firms trading on the Niger, and in the 1880s he took over two French companies active there and signed treaties with numerous African leaders. Largely because of Goldie's efforts, Great Britain was able to claim S Nigeria at the Conference of Berlin (see Berlin, Conference of) held in 1884–85.

In the following years, the British established their rule in SW Nigeria, partly by signing treaties (as in the Lagos hinterland) and partly by using force (as at Benin in 1897). Jaja, a leading African trader based at Opobo in the Niger delta and strongly opposed to European competition, was captured in 1887 and deported. Goldie's firm, given (1886) a British royal charter, as the Royal Niger Company, to administer the Niger River and N Nigeria, antagonized Europeans and Africans alike by its monopoly of trade on the Niger; in addition, it was not sufficiently powerful to gain effective control over N Nigeria, which was also sought by the French.