On the basis of mesopotamian irrigation practices modern agriculture can conclude that irrigation is not appropriate for hot climates irrigation should have little impact on the water table farming should be avoided in hot climates

The answer is water system ought to have little effect on the water table  

Explanation:

an arrangement of providing (arrive) with water by methods for fake channels, trench, and so on, esp to advance the development of nourishment crops. a modern water system system.Irrigation is basically the counterfeit utilization of water to beat lacks in precipitation for developing products. Water system is an essential determinant of agribusiness since its insufficiency are the most ground-breaking limitations on the expansion of horticultural generation.

a (congress) should be your answer since they make all federal laws in the u.s.