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 degradation outcome arises from salt migration within Byzantine mosaic tesserae in coastal settings?
• Which navigational consequence results from excessive backlash in a historical marine chronometer's gears?
• Which outcome risks undermining Ziggurat structural integrity when there is prolonged seasonal rainwater?
• Which risk increases when water diversion into pre-Columbian agricultural terraces exceeds design capacity during heavy rainfall?
• Which vulnerability during siege arises because stone fortifications undergo differential expansion?
• Which environmental risk increased with development constraints on Aztec chinampa cultivation expansions?