The Igbo, also known as the Ibo, are a West African ethnic group native to south-central and southeastern Nigeria. The Igbo were unaffected by Usman dan Fodio's Islamic jihad during the 19th century, and they became overwhelmingly Christian under colonization. In the wake of decolonization, the formerly decentralized Igbos developed a strong sense of ethnic identity, and the Igbo briefly achieved statehood as Biafra from 1967 to 1970, before their state was crushed during the Nigerian Civil War. In 2016, the Igbo world population was 34,000,000, with 33,000,000 living in Nigeria.