During a siege, which destructive outcome increases when undermining defenses?

💡 Explanation

Weakening the foundation via undermining leads to an accelerated structural collapse mechanism because diminished support introduces excessive shear stress; therefore, targeted collapse increases, rather than enhanced load-bearing because the keystone effect is reduced.

• Which issue significantly reduced transportation efficiency along Roman roads during periods of thawing after prolonged freezing?
• Which consequence faced envoys bearing bad tidings to Constantinople?
• Which outcome occurred using historical astrolabes on ships that sailed near the poles?
• Which outcome occurred from debasement compromising Byzantine gold currency?
• Which risk dramatically increased during the Inca bridge construction given reliance on plant-fiber ropes?
• Which adjustment to an astrolabe increases observational accuracy under high humidity?