Nile river considered to be the source of life during the period when ancient Egyptians lived. The source of river is still unknown.
Step-by-step explanation:
Melting snow and heavy summer rain within the Ethiopian mountains brought a heavy flooding stream of water causing the banks on the River Nile to flow on the desert lands. Thus it was proved to be the only source of moisture during the ancient Egyptian period.
When there was huge floods in the river it made the banks rich with wealthy mud which is called Black silt and this made the lands around the river more fertile. Many crops were grown on such fertile lands near the river. Reeds, called papyrus, grew along the shores of River Nile. Ancient Egyptians made paper and boats from these reeds.