Which outcome results when Roman roads traverse unstable subsoil?

💡 Explanation

Roads sink into unstable ground because the aggregate interlock mechanism fails. The road's structural integrity vanishes, because the layers separate, therefore the road subsides vertically rather than experiencing alternative modes such cracking or dusting that reflect entirely different processes.

• Which outcome commonly occurred during early Chinese cast iron production due to incomplete processing?
• Which outcome occurred when undermining a medieval castle's foundation?
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• Which consequence resulted when ancient Mesopotamian bronze sickle blades encountered highly siliceous soil during harvest?