Persistence of Settlements and Compound Average Annual Population Growth Rate in the Yautepec Valley
| Period | Total number of preexisting and newly established settlements | Backward continuity | Forward continuity | Compound average annual population growth rate |
|---|---|---|---|---|
| Terminal Formative (100 BCE–200 CE) | 145 | 37.9% | 94.5% | 0.32% |
| Early Classic (200 CE–300 CE) | 222 | 61.7% | 91.0% | −0.07% |
| Middle Classic (300 CE–450 CE) | 210 | 96.2% | 55.7% | −0.94% |
| Late Classic (450 CE–600 CE) | 128 | 91.4% | 31.3% | 0.26% |
The percent of cities and towns in a given period that persist from a prior period (backward continuity) and the percent that persist into a later period (forward continuity) are known to correlate positively with economic and political stability in a region. Researchers studying demographic trends in the Indigenous societies of ancient Mexico determined both continuity measures for the Yautepec Valley, which lay within the macroregional hegemony of the city-state of Teotihuacan from roughly 100 BCE until roughly 450 CE, at which point Teotihuacan declined. The team concluded that __________