Which increased risk resulted from undermining a medieval castle wall?

💡 Explanation

Undermining destabilizes structural integrity because the *load redistribution* concentrates stress onto remaining supports. Therefore, the risk of catastrophic collapse is increased, rather than phenomena involving pressure, oxidation, or thermal strain on the walls.

• Which environmental vulnerability increased significantly in areas relying heavily on maize cultivation during the pre-Columbian era?
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• Which effect limited the geodetic accuracy of early Islamic astrolabes constructed using brass at varying temperatures?
• Which consequence results when a mariner miscalculates longitude due to inaccurate chronometer calibration circa 1780?
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• Which functional error emerged gradually due to differential thermal expansion impacting the astrolabe alidade alignment?