Assertion: maya collapse | /r/CapableOf | range to intense drought
Facets:
value: to some catastrophic environmental event
type: CAUSE
value: between competing city-states
type: LOCATION
value: from overpopulation
type: CAUSE
Source sentences:
text: Theories about what caused the Classic Maya collapse have ranged from overpopulation to ongoing military conflict between competing city-states to some catastrophic environmental event, such as an intense drought—or some combination of all of those factors.