The Bamana originated as a royal section of the Mandinka people. They are founders of the Mali Empire in the 13th Century. Both Manding and Bambara are part of the Mandé ethno-linguistic group, whose divergence is dated to at least about 7,000 years ago, and branches of which are associated with sites near Tichitt (now subsumed by the Sahara in southern Mauritania), where urban centers began to emerge by as early as 2500 BC. By 250 BC, a Mandé subgroup, the Bozo, founded the city of Djenne. Between 300 AD and 1100 AD, the Soninke Mandé dominated the Western Mali, leading the Ghana Empire. When the Mandé Songhai Empire dissolved after 1600 AD, many Mandé-speaking groups along the upper Niger river basin turned inward. The Bamana appeared again in this milieu with the rise of a Bamana Empire in the 1740s, when the Mali Empire started to crumble around 1559.