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← HistoryWhich physical consequence emerged periodically on roadways during empire consolidation?
A)Increased lateral thrust on retaining walls✓
B)Reduced material thermal expansion
C)Increased roadbed sediment consolidation
D)Reduced aggregate material micro-fracturing
💡 Explanation
Increased wall failures occurred, because expanding the road network required higher embankment support. This leads to increased lateral thrust transmitted through backfill soil via the RANKINE passive pressure mechanism. Therefore thrust increased, rather than expansion which reduces stress.
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