The Incas created a highway and road system in Peru with over 18,000 miles of roads.
The Incas were the first to cultivate the potato in Peru.
The Incas used advanced farming techniques such as canals and ditches to irrigate their crops in Peru.
The Incas administered intelligence tests to Incan children and based on their results they were either taught a trade or sent to school to become administrators or part of the nobility.
