Which vulnerability contributed most to frequent breaches of ancient rammed-earth fortification walls, compared to stone walls?

💡 Explanation

Earthen walls degraded primarily due to surface erosion from consistent rainwater contact. Over time, the hydraulic action and dissolution lowered their height and structural integrity, because they lacked the weathering resistance of stone. Therefore, these fortifications experienced breaches, rather than cracking or expansion common in poorly constructed stone walls.

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