Although not usually the only cause of a civilization's decline, drought has been implicated as a major factor in such decline worldwide. Civilizations as diverse as the Akkadian Empire in Syria, the Maya in Guatemala, and the Tang Dynasty in China all experienced severe droughts immediately prior to the formal date of their collapse. My question is how could these or other cultures, civilizations, or nations endure severe drought and come out stronger? What plausible technologies or land-use strategies could have saved these entities? What are some examples of societies that did incorporate drought mitigation techniques and avoid collapse?