Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Mesa Verde National Park' has mentioned 'Drought' in the following places:
Occurrence Sentence Text Source
Despite robust growth during the early and mid-9th century, unpredictable rainfall and periodic drought led to a dramatic reversal of settlement trends in the area.
[24][b] By 1150, drought had once again stressed the region's inhabitants, leading to a temporary cessation of great house construction at Mesa Verde.
A severe drought from 1130 to 1180 led to rapid depopulation in many parts of the San Juan Basin, particularly at Chaco Canyon.
Mesa Verde's population remained fairly stable during the 12th century drought.
[25] Archaeologists refer to this period as the "Great Drought".
[30] Civic leaders in the region likely attained power and prestige by distributing food during times of drought.
This system probably broke down during the "Great Drought", leading to intense warfare between competing clans.
The added population stressed the mesa's environment, further straining an agricultural society that was suffering from drought.
[56] While drought, resource depletion, and overpopulation all contributed to instability during the last two centuries of Ancestral Puebloan occupation, their overdependence on maize crops is considered the "fatal flaw" of their subsistence strategy.
[144] The fires, many of which were started by lightning during times of drought, burned 28,340 acres (11,470xc2xa0ha) of forest, more than half the park.