Which constraint limited the expansion of terrace farming by pre-Columbian Andean societies to higher rainfull area?

💡 Explanation

When rainfall exceeds drainage capacity, leaching occurs because excess water mobilizes soil particles, destabilizing terrace walls and potentially leading to landslides, limiting intensive terrace agriculture to higher-rainfall Highland area. Therefore soil destabilization is central constraint, rather than fertility loss or salinization requires dissimilar environmental setting.

• Which mechanism allowed the development of reliable mechanical clocks from the 14th century onward?
• Which outcome occurred in some pre-Columbian chinampa systems during prolonged anaerobic soil conditions used for maize cultivation?
• Which microstructural consequence occurred in early Bronze Age metallurgy from repeated hot forging?
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• Which structural issue historically affected timber canal aqueducts as water permeated the wood?
• Which outcome arises when traditional chinampa systems experience prolonged, elevated flooding during the rainy season?