Nigeria i//, officially the Federal Republic of Nigeria, is a federal constitutional republic in West Africa, bordering Beninin the west, Chad and Cameroon in the east, and Niger in the north. Its coast in the south lies on the Gulf of Guinea in the Atlantic Ocean. It comprises 36 states and the Federal Capital Territory, where the capital, Abuja is located.
Modern-day Nigeria has been the site of numerous kingdoms and tribal states for millennia. The modern state originated from British colonial rule beginning in the 19th century, and the merging of the Southern Nigeria Protectorate and Northern Nigeria Protectoratein 1914. The British set up administrative and legal structures whilst practicing indirect rule through traditional chiefdoms. Nigeria became a formally independent federation in 1960, and plunged into a civil war from 1967–1970. It has since alternated between democratically-elected civilian governments and military dictatorships, with its 2011 presidential elections being viewed as the first to be conducted reasonably freely and fairly.
Nigeria is often referred to as the "Giant of Africa", owing to its large population and economy. With approximately 174 million inhabitants, Nigeria is the most populous country in Africa and the seventh most populous country in the world. Nigeria has one of the largest populations of youth in the world. The country is viewed as a multinational state, as it is inhabited by over 500 ethnic groups, of which the three largest are the Hausa, Igbo and Yoruba; these ethnic groups speak over 500 different languages, and are identified with wide variety of cultures. Nigeria is divided roughly in half between Christians, who live mostly in the southern and central parts of the country, and Muslims in the northern and southwestern regions. A minority of the population practise religions indigenous to Nigeria, such as those native to Igbo and Yoruba peoples.
As of 2015, Nigeria is the world's 20th largest economy, worth more than $500 billion and $1 trillion in terms of nominal GDP andpurchasing power parity respectively. It overtook South Africa to become Africa's largest economy in 2014. Also, the debt-to-GDP ratio is only 11 percent, which is 8 percent below the 2012 ratio. Nigeria is considered to be an emerging market by theWorld Bank and has been identified as a regional power on the African continent. Nigeria is considered to be a middle power in the world, and has also been identified as an emerging power; it is a member of the MINT group of countries, which are widely seen as the globe's next "BRIC-like" economies. It is also listed among the "Next Eleven" economies set to become among the biggest in the world. Nigeria is a member of the Commonwealth of Nations, the African Union, OPEC, and theUnited Nations among other international organizations.