Which adaptation allowed chinampas farming to expand in the lacustrine environment of the Valley of Mexico?

💡 Explanation

Chinampas relied on constructing raised beds in shallow lake areas, where sluice gates managed water level and drainage to prevent waterlogging and control nutrient availability. Therefore, drainage via sluice gates enabled expansion, rather than draft animals impractical in lacustrine areas, or crop rotation/synthetic fertilizers, technologies developed later.

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