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← HistoryWhich consequence results when the 'agger' embankment of a Roman siege ramp reaches its height limit?
A)Increased archer missile effectiveness inside
B)Breaching through unstable defensive slopes✓
C)Fortification under-mining accelerates rapidly
D)Catapult siege ranges are greatly reduced
💡 Explanation
Compaction increases excessively; Shear Failure results because weight at maximum height exceeds soil shear strength. Therefore, slopes often became unstable, rather than presenting a solid, level surface. This limited effectiveness by increasing risk rather than accelerating attacks.
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