The aftermath of Alodia's fall saw extensive Arabization, with the Nubians embracing the tribal system of the Arab migrants. Those living along the Nile between al Dabbah in the north and the confluence of the two Niles in the south were subsumed into the Ja'alin tribe. To the east, west and south of the Ja'alin the country was now dominated by tribes claiming a Juhaynah ancestry. In the area around Soba, the tribal Abdallab identity prevailed. The Nubian language was spoken in central Sudan until the 19th century, when it was replaced by Arabic. Sudanese Arabic preserves many words of Nubian origin, and Nubian place names can be found as far south as the Blue Nile state.