Which outcome undermines long-term Inca stone wall stability?

💡 Explanation

Thermal expansion fractures the precisely cut stones during freeze-thaw cycles; this is frost weathering. Because the ashlars lose frictional interlock due to the expansion, it reduces structural integrity, therefore causing the wall to weaken over decades, rather than remaining stable.

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• Which long-term outcome frequently resulted from the use of chinampas without proper water management techniques?
• Which mechanism explains the increased accuracy of Islamic astronomical observations after introduction of trigonometry?
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