African art describes the modern and historical paintings, sculptures, installations, and other visual culture from native or indigenous Africans and the African continent. The definition may also include the art of the African diasporas, such as: African American, Caribbean or art in South American societies inspired by African traditions. Despite this diversity, there are unifying artistic themes present when considering the totality of the visual culture from the continent of Africa. Pottery, metalwork, sculpture, architecture, textile art and fiber art are important visual art forms across Africa and may be included in the study of African art. The term "African art" does not usually include the art of the North African areas along the Mediterranean coast, as such areas had long been part of different traditions. For more than a millennium, the art of such areas had formed part of Berber or Islamic art, although with many particular local characteristics. The Art of Ethiopia, with a long Christian tradition, is also different from that of most of Africa, where Traditional African religion (with Islam in the north) was dominant until the 20th century. African art includes prehistoric and ancient art, Islamic art of West Africa, the Christian art of East Africa, and the traditional artifacts of these and other regions. Much African sculpture was historically in wood and other natural materials that have not survived from earlier than a few centuries ago, although rare older pottery and metal figures can be found from a number of areas. Some of the earliest decorative objects, such as shell beads and evidence of paint, have been discovered in Africa, dating to the Middle Stone Age. Masks are important elements in the art of many peoples, along with human figures, and are often highly Stylized. There is a vast variety of styles, often varying within the same context of origin and depending on the use of the object, but wide regional trends are apparent; sculpture is most common among "groups of settled cultivators in the areas drained by the Niger and Congo rivers" in West Africa. Direct images of deities are relatively infrequent, but masks in particular are or were often made for ritual ceremonies. Since the late 19th century there has been an increasing amount of African art in Western collections, the finest pieces of which are displayed as part of the history of colonization. African art has had an important influence on