Which risk increases during prolonged, intense rainfall on steeply terraced agricultural land in the pre-Columbian Andes?

💡 Explanation

Terrace walls experienced hydrostatic failure because excessive water saturates the soil, increasing pore pressure behind the retaining structures; therefore the retaining wall catastrophically collapses, rather than experiencing nutrient deficiencies given the short time scale.

• Which outcome occurs during ziggurat construction due to differential settlement?
• Which process critically degraded Inca agricultural terraces, following destabilization?
• Which limiting factor constrained the potential population density supported by complex Pre-Columbian chinampa agriculture?
• Which consequence occurred if periodic dredging of Ancient Mesopotamian canals was neglected?
• Which mechanical result limits span in Incan suspension bridges?
• Which structural issue caused earthen fortifications like motte-and-baileys to require continuous maintenance during siege conditions?