Which consequence resulted from exceeding Appian Way's drainage capacity?

💡 Explanation

Roadbed subsidence occurred due to high water weakening the foundations; exceeding threshold triggered soil washout beneath pavement via hydraulic action. Therefore, the roadbed subsided accelerating cracking, rather than uniformly wearing because the unstable base degraded unevenly.

• Which method historically minimized the risk of fire spreading across closely packed wooden buildings during urban development?
• Which outcome occurred in early versions of shadoof irrigation systems when the water source level was significantly lowered during the dry season?
• Which constraint limited the resolution of astronomical measurements achievable using astrolabes historically?
• Which risk increases when a large astrolabe's alidade sighting vane becomes warped?
• Which effect reduced trebuchet range if counterweight mass was significantly decreased during a siege?
• Which navigation error increases most significantly when a chronometer loses its regulation during weeks-long voyage?