Before an agreement signed in 2011, South Sudan was a part of its northern neighbour Sudan. The landlocked nation in East-Central Africa is a diverse one. It has a population of just over 11 million but is home to 60 different ethnic groups and 200 languages. South Sudan is rich in oil and has the third-largest oil reserves in sub-Saharan Africa. Much of the country’s economy is based in the oil and lumber industries.