Theee reasons that the Egyptians followed were: inundation,flooding,and growth

1. Inundation: The annual flooding of the Nile River was a significant event in ancient Egypt. It was seen as a crucial event that brought fertility and abundance to the land. The floodwaters would deposit nutrient-rich silt on the banks, which was essential for agricultural productivity. Egyptians closely monitored the floods and developed a calendar to predict the timing and intensity of the inundation. They believed that the flooding and subsequent receding of the waters represented the cycle of life, death, and rebirth.

2. Flooding: Flooding was closely related to the inundation and was another reason for its importance. The Nile River would often flood its banks, providing water for irrigation beyond the reach of the inundation. This allowed Egyptians to cultivate crops year-round, leading to a surplus of food. The ability to control and utilize the floods effectively was crucial for the survival and prosperity of ancient Egypt.

3. Growth: The regular inundation and flooding of the Nile were instrumental in supporting the growth and expansion of ancient Egyptian civilization. The fertile land resulting from the floods provided abundant resources for agriculture, enabling sustenance and surplus production. This surplus led to population growth, as more people could be supported by the agricultural bounty. The availability of food and resources facilitated the growth of cities, trade networks, and overall societal development in ancient Egypt.