Ancient Peruvians used bird guano to fertilize maize and build a major civilization in the Chincha Valley in Peru.
In 1532, in the city of Cajamarca, Peru, Spanish conquistador Francisco Pizarro and a group of Europeans took the Inca ruler Atahualpa hostage, setting the stage for the fall of the Inca Empire.
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In A Nutshell Between 1250 and 1400 CE, Peru’s Chincha Kingdom mastered seabird guano fertilization, enabling agriculture in one of Earth’s driest deserts centuries before the Inca Empire arrived ...