depopulation, n.All

Depopulation (n.) undid ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠Sparta: a land that could feed 30,000 hoplites had fewer than 1000 citizens, and the city sank under a single defeat.

Depopulation (n.) of ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠the countryside increases its surplus population: the emptier the district of people, the greater its 'relative surplus population'.

Depopulation (n.) the ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠great Malthusian panacea has turned green Erin into a land of Cockaigne, where people loathe the present, despair of the future and have only one fixed idea, to emigrate to America.