Which vulnerability critically increased when medieval motte-and-bailey fortifications experienced prolonged siege?

💡 Explanation

Rampart erosion directly undermines timber palisades because soil supporting posts degrade over continuous periods via weather and stress, leading to wall collapse; therefore defence weakened rather than gate failures, since earthworks are key defence.

• Which acute operational risk increased as medieval Chinese armies integrated cast iron crossbow triggers?
• Which outcome results if Byzantine mosaics experienced sulfation?
• Which outcome occurred when early Chinese crossbow triggers exceeded design limits?
• Which increased risk resulted from undermining a medieval castle wall?
• Which risk to Roman timber fortifications increased when clay daub layers delaminated during long sieges?
• Which consequence results when terrace gradient is excessively steep in historical Andean agriculture?