Which mechanism limited the expansion of terraced agriculture in the ancient Andes despite its benefits?

💡 Explanation

Increased tectonic activity caused frequent landslides which would easily damage terraced fields because slopes were destabilized in the process of terracing, offsetting improved crop densities. Therefore vulnerability to landslides was the limiting factor, rather than topsoil depletion, land constraints or increased labor alone which could be resolved with alternate practices.

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