"Bro this is literally slavery ๐ญ" - Slaveowning Founding Fathers
Early Modern Period (~1600 AD)
(media.piefed.social)
#2 and #3 circle back to #1 really, and #1 is thanks to advances in medicine but also hugely by the invention of fertilizer based on... petroleum. New time traveler quest unlocked: go back to the Carboniferous period and unleash microbes to decay things faster.