Which risk intensified with the emergence of larger, more elaborate dry-stone retaining walls used during the Inca empire?

💡 Explanation

Hydrostatic pressure risk increased because poor drainage allowed water to accumulate behind the massive walls during El Niño events promoting instability via lateral FORCE IMBALANCE, therefore wall collapse occurred rather than controlled deformation under stable conditions.

• Which process degrades pietra dura inlay when groundwater rises?
• Which communication failure risked inaccuracies in Inca state records when relaying quipu data?
• Which challenge increased for Inca suspension bridges after a wet season?
• Which outcome accelerates blade weathering within early cast iron Chinese agricultural tools?
• What consequence accompanied increased bridge spans when rope bridges were employed during the Inca Empire's expansion?
• Which risk dramatically increases when timber bridges' joints degrade?