Which outcome resulted from reduced flow efficiency through Persian Qanat systems following the Mongol conquests?

💡 Explanation

Reduced maintenance and damage disrupted the Hydraulic head control, causing uneven water distribution; therefore certain cities faced critical water shortages because water was diverted inefficiently to other regions rather than uniformly.

• Which risk increases when attempting to mechanically solve algebraic cubic equations using Cardano's Gear?
• In ancient China, which problem was reduced using clay-mold piece casting to produce crossbow trigger mechanisms?
• Which process historically weakened early Mesopotamian bronze agricultural tools when over-heated during manufacture?
• Which outcome occurs when the lateen sail angle acutely decreases on a historical dhow?
• Which attribute limited the size of bronze castings produced via lost-wax casting?
• Which risk increased significantly with the perfection of uniform-bore cannons by the mid-19th Century?