What is the most critical aspect of the farming process in Egypt?

The yearly inundation was the most important aspect of Egyptian agriculture, but the people obviously still needed to work the land. Fields had to be plowed and seed sown and water moved to different areas, which led to the invention of the ox-drawn plow and improvements in irrigation.

Explanation:

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.