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Which risk markedly increased with Inca expansion due to rapid stone-transport beyond the local terrain?

A)Decreased load bearing wall friction
B)Increased aggregate-cement ratio variation
C)Decreased thermal expansion coefficient stability
D)Increased tensile fracture surface exposure

💡 Explanation

Inca expansion stressed existing masonry logistics capabilities; inconsistent materials yielded varying mixes. Differential strength exists because higher variations increases bulking agents, therefore concrete integrity weakens rather than strengthens under consistent material ratios.

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