Igboland Biafra on May 30, 1967. Nigerian General Emeka Odumegwu-Ojukwu on this day made a declaration of independence of Biafra from Nigeria and became the head of state of the new republic. The Nigerian Civil War (or the "Nigerian-Biafran War") lasted from 6 July 1967 until 15 January 1970, after which Biafra once again became part of Nigeria. The Republic of Biafra was defeated after three years of war by the federal government of Nigeria from 1967 to 1970 with military support from the United Kingdom (strategy and ammunition), Soviet Union (ammunition), the United Arab Republic (air force), as well as
Bight of Biafra trade emanating from the Bight of Biafra. Between 1525 and 1859, Britain dominated the slave trade from the Bight of Biafra accounting for over two-thirds of slaves exported to the New World. However, in 1807, Great Britain made illegal the international trade in slaves, and the Royal Navy was deployed to forcibly prevent slavers from the United States, France, Spain, Portugal, Holland, West Africa and Arabia from plying their trade. Earlier, in 1777, Portugal transferred control of Fernando Poo and Annobon to Spanish suzerainty thus introducing Spain into the early colonial history of the Bight of Biafra. On 30 June