During a Roman siege, which outcome resulted because miners collapsed enemy walls?

💡 Explanation

Subsidence (ground settlement) causes the loss of arch keystone support because the undermining collapses adjacent support; therefore structural integrity fails rather than increasing in tensile strength, improving defenses, or influencing trajectory.

• Which navigational outcome was averted during the Age of Sail by measuring lunar distances?
• Which increased risk resulted from Aztec chinampa intensification?
• Which benefit results from the practice of regularly 'silt-layering' in chinampa agriculture?
• Which navigational risk increased when chronometers experienced pendulum error?
• Which navigational error arises when compensating compass readings without accounting compass variation in the 18th century?
• Which consequence would result if Viking rope bridge construction lacked sufficient fiber twist?