Question

Why are the Inca roads considered an amazing achievement?

Answer 1

The best example is an amazing system of roads. The Incas built roads across the length and width of their empire. To create routes through steep mountain ranges, they carved staircases and gouged tunnels out of the rock. They also built suspension bridges over rivers.

Step-by-step explanation:

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Answer 2

The best example is their amazing system of roads. The Incas built roads across the length and width of their empire. To create routes through steep mountain ranges, they carved staircases and gouged tunnels out of rock. They also built suspension bridges over rivers.
Hope this helps