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 outcome reduces the Great Pyramid's long-term structural integrity given differential foundation settling?
• Which early drawback limited long-range shots from the repeating crossbows?
• Which consequence occurred if medieval stonemasons built arches without proper centering?
• Which consequence resulted from applying Roman concrete to roads on marshy ground?
• In 17th-century Mughal gardens, which outcome can occur when the water pressure exceeds the structural limits of qanat-based delivery systems?
• Which consequence arises in historic pietra dura when uncontrolled humidity fluctuations affect ivory and marble?