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The release of stored serotonin and the eventual damage of serotonin-producing neurons is most closely associated with the long-term use of
Smallpox Epidemic
Widespread outbreaks of smallpox, a highly contagious and deadly disease, that have occurred throughout history.
Sugar Cultivation
The agricultural process of growing sugar cane or sugar beets to produce sugar, a practice that has historically been associated with slavery and forced labor in many regions.
Death Rates
A measure of the number of deaths in a particular population, scaled to the size of that population, per unit of time.
Birth Rates
The number of live births per thousand of population per year, a crucial demographic indicator affecting a nation's population growth.
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