Cameroon officially the Republic of Cameroon (French: République du Cameroun), is a country in Central Africa. It is bordered by Nigeria to the west; Chad to the northeast; the Central African Republic to the east; and Equatorial Guinea, Gabon, and the Republic of the Congo to the south. Cameroon's coastline lies on the Bight of Bonny, part of the Gulf of Guinea and the Atlantic Ocean. Cameroon is home to more than 200 different linguistic groups. French and English are the official languages. The country is often referred to as "Africa in miniature" for its geological and cultural diversity. Natural features include beaches, deserts, mountains, rainforests, and savannas. The highest point is Mount Cameroon in the southwest Region of the country, and the largest cities are Douala, Yaoundé, and Garoua. After independence, the newly united nation joined the Commonwealth of Nations, although the vast majority of its territories had previously been a German colony and, after World War I, a French mandate. The country is well known for its native styles of music, particularly makossa and bikutsi, and for its successful national football team.