Christianity was introduced at Benin in the fifteenth century by Portuguese Roman Catholic priests who accompanied traders and officials to the West African coast. Several churches were built to serve the Portuguese community and a small number of African converts. When direct Portuguese contacts in the region were withdrawn, however, the influence of the Catholic missionaries waned and by the eighteenth century had disappeared.
Although churchmen in Britain had been influential in the drive to abolish the slave trade, significant missionary activity was renewed only in the 1840s and was confined for some time to the area between Lagos and Ibadan. The first missions there were opened by the Church of England's Church Missionary Society (CMS). They were followed by other Protestant denominations from Britain, Canada, and the United States and in the 1860s by Roman Catholic religious orders. Protestant missionaries tended to divide the country into spheres of activity to avoid competition with each other, and Catholic missions similarly avoided duplication of effort among the several religious orders working there. Catholic missionaries were particularly active among the Igbo, the CMS among the Yoruba.
The CMS initially promoted Africans to responsible positions in the mission field, an outstanding example being the appointment of Samuel Ajayi Crowther as the first Anglican bishop of the Niger. Crowther, a liberated Yoruba slave, had been educated in Sierra Leone and in Britain, where he was ordained before returning to his homeland with the first group of missionaries sent there by the CMS. This was part of a conscious "native church" policy pursued by the Anglicans and others to create indigenous ecclesiastical institutions that eventually would be independent of European tutelage. The effort failed in part, however, because church authorities came to think that religious discipline had grown too lax during Crowther's episcopate but especially because of the rise of prejudice. Crowther was succeeded as bishop by a British cleric. Nevertheless, the acceptance of Christianity by large numbers of Nigerians depended finally on the various denominations coming to terms with local conditions and involved participation of an increasingly high proportion of African clergy in the missions.
In large measure, European missionaries were convinced of the value of colonial rule, thereby reinforcing colonial policy. In reaction some African Christian communities formed their own independent churches. British expansion accelerated in the last decades of the nineteenth century. The early history of Lagos Colony was one of repeated attempts to end the Yoruba wars. In the face of threats to the divided Yoruba states from Dahomey and the Sokoto Caliphate, as represented by the emirate of Ilorin, the British governor—assisted by the CMS—succeeded in imposing peace settlements on the interior.
Colonial Lagos was a busy, cosmopolitan port, reflecting Victorian and distinctively Brazilian architecture and the varied backgrounds of a black elite, composed of English-speakers from Sierra Leone and of emancipated slaves repatriated from Brazil and Cuba. Its residents were employed in official capacities and were active in business. Africans also were represented on the Lagos Legislative Council, a largely appointed assembly.
After the Berlin Conference, Britain announced formation of the Oil Rivers Protectorate, which included the Niger Delta and extended eastward to Calabar, where the British consulate general was relocated from Fernando Po. The essential purpose of the protectorate was to control trade coming down the Niger. Vice consuls were assigned to ports that already had concluded treaties of cooperation with the Foreign Office. Local rulers continued to administer their territories, but consular authorities assumed jurisdiction for the equity courts established earlier by the foreign mercantile communities. A constabulary force was raised and used to pacify the coastal area. In 1894 the territory was redesignated the Niger Coast Protectorate and was expanded to include the region from Calabar to Lagos Colony and Protectorate, including the hinterland, and northward up the Niger River as far as Lokoja, the headquarters of the Royal Niger Company. As a protectorate, it did not have the status of a colony but remained under the jurisdiction of the Foreign Office.
Continued expansion of the protectorate was accomplished largely by diplomatic means, although military force was employed to bring Ijebu, Oyo, and Benin into compliance with dictated treaty obligations. The conquest of Benin in 1897 completed the British occupation of southwestern Nigeria. The incident that sparked the expedition was the massacre of a British consul and his party, which was on its way to investigate reports of ritual human sacrifice in the city of Benin. In reprisal a marine detachment promptly stormed the city and destroyed the oba's palace. The reigning oba was sent into exile, and Benin was administered indirectly under the protectorate through a council of chiefs.
Although treaties were signed with rulers as far north as Sokoto by 1885, actual British control was confined to the coastal area and the immediate vicinity of Lokoja until 1900. The Royal Niger Company had access to the territory from Lokoja extending along the Niger and Benue rivers above their confluence, but there was no effective control, even after punitive expeditions against Bida and Ilorin in 1897. The clear intent was to occupy the Sokoto Caliphate, but for that purpose the Royal Niger Company was not deemed to be a sufficient instrument of imperialism. Consequently, on December 31, 1899, Britain terminated the charter of the company, providing compensation and retention of valuable mineral rights
