Original sentence: The ancient Sinhalese used hydrology to build complex Irrigation Works of Ancient Sri Lanka, known for inventiion of the Valve Pit which allowed construction of large reservoirs, anicuts and canals which still function
Edited sentence: The ancient Sinhalese used hydrology to build some of the most complex irrigation works in world history, Irrigation Works of Ancient Sri Lanka are most famous for inventing the Valve Pit which let them construct large reservoirs, anicuts and canals which are still functioning