Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Angkor' has mentioned 'Drought' in the following places:
Occurrence Sentence Text Source
[30] LDEO dendrochronological research has established tree-ring chronologies indicating severe periods of drought across mainland Southeast Asia in the early 15th century, raising the possibility that Angkor's canals and reservoirs ran dry and ended expansion of available farmland.