History
The Kingdom of Benin, ruled by the Edo from what is now Benin City, grew into a powerful state and reached its height under Oba Ewuare in the 15th century, when the city was enclosed by great earthen walls and moats. Its guilds of brass-casters produced the plaques and heads now known as the Benin Bronzes. In 1897 a British punitive expedition burned the city and carried many works to Europe, and some have recently begun to return.
Along the coast, city-states such as Bonny, Brass, Opobo and the Efik settlements at Calabar grew rich as middlemen in the Atlantic slave trade and then in palm oil, which gave the delta its old name, the Oil Rivers. Jaja of Opobo, a former slave who became a powerful king, was exiled by the British in 1887. Calabar became an early seat of British rule, and the Scottish missionary Mary Slessor spent decades among its peoples.
Oil was struck at Oloibiri in 1956, and the delta became the source of most of Nigeria's export earnings. The region was fought over in the Biafran war, and in the decades since, anger over pollution and poverty has produced protest and conflict. Ken Saro-Wiwa, the Ogoni writer and activist, was executed by the military government in 1995, and from the mid-2000s militant groups attacked pipelines and kidnapped oil workers until a federal amnesty in 2009 brought a partial calm. In the far east, Nigeria handed the Bakassi peninsula to Cameroon by 2008, following a 2002 ruling of the International Court of Justice.
