The extension of the Aryas in the rich plains of the Yamuna and the Ganges must in the first place have followed the course of the former river towards the south, and then reached over the land between the two rivers, until the immigrants arrived further and further to the east on the banks of the Ganges. We have no historical information about the facts of these migrations and conquests, of the occupation of the valleys of the Yamuna, the upper and middle Ganges; we can only ascertain that the valley of the Yamuna, and the doab of the two rivers were first occupied and most thickly colonised. It is not till we come lower down the course of the Ganges, that we find a large number of the old population in a position of subjection to the Arian settlers. Lastly, as we learn from the Indian Epos, the Aryas had not merely to contend against the old population at the time of their settlement; nor did they merely press upon one another, while those who came last sought to push forward the early immigrants, as we concluded to be the case from the hymns quoted from the Rigveda; they also engaged in conflicts among themselves for the possession of the best land between the Yamuna and the Ganges. In these struggles the tribes of the immigrants became amalgamated into large communities or nations, and the successful leaders found themselves at the head of important states. The conquest and colonisation of such large regions, the limitation and arrangement of the new states founded in them, could only be accomplished in a long space of time. According to the Epos and the Puranas, _i.e._ the very late and untrustworthy collections of Indian legends and traditions, it was after a great war among the Aryas in the doab of the Yamuna and Ganges, in which the family of Pandu obtained the crown of the Bharatas on the upper Ganges, that the commotion ceased, and the newly founded states enjoyed a state of peace. In the Rigveda, the Bharatas are to the west of the Vipaça, in the Epos we find them dwelling on the upper Ganges; on the Yamuna are settled the nations of the Matsyas, and the Yadavas; between the upper Yamuna and the Ganges are the Panchalas, _i.e._ the five tribes; eastward of the Bharatas on the Sarayu, down to the Ganges, are the Koçalas. Still further to the east and north of the Ganges are the Videhas; on the Ganges itself are the Kaçis and the Angas, and to the south of the Ganges the Magadhas.