Africa is the second-largest continent in the world both in size and population. It is home to over 1 billion people, who speak over 1,500 different languages. is the most centrally located continent in the world; both the prime meridian (0 degrees longitude) and the equator (0 degrees latitude) cut across it; hence, it is the only continent to extend from the northern temperate zone to the southern temperate zone. home to the world's longest river; The Nile River; which has a total length of 6,650 kilometers (4,132 miles) and cuts across 11 countries. One of the seven wonders of the world; Victoria Falls; located along the border of Zambia and Zimbabwe.