Geography has always been the determining factor of development in a particular place. Favourable environments with plenty of resources are populated. Therefore, river valleys were preferred by people for the following reasons:
i) Sufficient water for all their needs are provided by river water.
ii) Crops could be grown easily as the land near the river was very fertile. This was their source of food, which helped in their survival.
iii) The river served as a means of transport.