Which environmental constraint primarily limited the expansion of chinampa agriculture in the Valley of Mexico during pre-Columbian times?

💡 Explanation

When evaporation exceeded rainfall, salt accumulated in the chinampa soils due to capillary action, poisoning the crops because the irrigation water was slightly saline. Therefore, salinization restricted expansion, rather than flooding, depletion or limited freshwater which were addressed by engineering feats of water level management.

• Which advantage occurs when accurately grinding lenses in Islamic Golden Age observatories used lenses with spherical aberration correction?
• Which limitation arose when increased sizes were attempted during all-wood ship construction prior to iron reinforcement?
• Which agricultural outcome resulted from terraced hillside cultivation in the Andes?
• Which purpose underpinned the meticulous astronomical observations made at the Maragheh observatory during the 13th century?
• Which mechanical consequence arises when an astrolabe's alidade is misaligned with the rete during celestial observation?
• Which risk increased during Uruk period Mesopotamian irrigation system expansions with increased canal length?