What was a development of the inca civilization?

a. the creation of drainage systems and canals for irrigation

b. the invention of a printing press

c. the creation of the most complex writing system in the americas

d. the invention of the wheel-barrow

A

the Incan civilization was known for the impressive waterworks in their city centers. Some of these included canals, fountains, drainage systems, and expansive irrigation.

One example of their advancement in this area is the Incan citadel called Machu Picchu which is said to be "the pinnacle of the architectural and engineering works of the Inca civilization" when talking about its water supply system.

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