Why did Archimedes make the screw pump?

Archimedes invented the screw pump, also known as the Archimedes screw, to efficiently lift water for irrigation and drainage purposes. It allowed for the movement of water from lower to higher elevations, making it particularly useful in regions with varying terrain. The design utilized a helical screw within a cylindrical casing, which could be turned manually or mechanically to transport water. This innovation significantly improved agricultural productivity and water management in ancient times.