Some modern traditions identify the Susu as the Sosso, inhabitants of Kaniaga. According to much later traditions, from the late nineteenth and twentieth centuries, Diara Kante took control of Koumbi Saleh and established the Diarisso Dynasty. His son, Soumaoro Kante, succeeded him and forced the people to pay him tribute. The Sosso also managed to annex the neighboring Mandinka state of Kangaba to the south, where the important goldfields of Bure were located. In his brief overview of Sudanese history, ibn Khaldun related that "the people of Mali outnumbered the peoples of the Sudan in their neighborhood and dominated the whole region." He went on to relate that they "vanquished the Susu and acquired all their possessions, both their ancient kingdom and that of Ghana." According to a modern tradition, this resurgence of Mali was led by Sundiata Keita, the founder of Mali and ruler of its core area of Kangaba. Delafosse assigned an arbitrary but widely accepted date of 1230 to the event. This tradition states that "Ghana" Soumaba Cisse, at the time a vassal of the Sosso, rebelled with Kangaba and became part of a loose federation of Mande-speaking states. After Soumaoro's defeat at the Battle of Kirina in 1235 (a date again assigned arbitrarily by Delafosse), the new rulers of Koumbi Saleh became permanent allies of the Mali Empire. As Mali became more powerful, Koumbi Saleh's role as an ally declined to that of a submissive state, and it became the client described in al-'Umari/al-Dukkali's account of 1340. The word "ghana" means "warrior" or " war chief" and was the title given to the rulers of the original kingdom whose Soninke name was "Ouagadou". "Kaya Maghan" (lord of the gold) was another title for these kings. The extraordinary renown of the Ghana empire induced Kwame Nkrumah, the political leader of the Gold Coast, to name his country Ghana when it attained independence in 1957.