Nigeria is a populous West African nation, Africa's largest economy, and a regional power. It is a federation of 36 states and the Federal Capital Territory, with a diverse population of over 226 million people belonging to more than 250 ethnic groups. Nigeria's economy is the largest in Africa and an emerging market, although it faces significant challenges like poverty and electricity access, despite being the continent's largest oil producer. The capital city is Abuja, and English is the official language, though many other languages, such as Hausa, Igbo, and Yoruba, are widely spoken.