Invention of pottery vessels. The earliest vessels were probably used just for cooking before the development of impermeable ceramics made them suitable for long-term storage. (“Dishwasher safe” is, however, still a work in progress.)
The beginning of the agricultural revolution. Raising crops allowed people to shift away from a migratory existence. And with our feet up after a good meal, all sorts of other ideas started to occur to us, setting the stage for civilizations to develop.
The regular flooding of the Nile begat the earliest form of artificial irrigation: basin irrigation, in which water channels were allowed to flood but prevented from draining.
The Sumerians create the first pesticide, in the form of sulfur, which was dusted on crops. (No historical evidence is available on whether this was followed by a demand for appropriate cuneiform-tablet…
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