One of the greatest achievements of the Incas was their amazing system of roads.
The Inca Road System was really important because it connected their entire empire, which stretched across mountains and valleys in South America. These roads made it easier for people, soldiers, and traders to travel quickly from one place to another. Imagine being able to walk across the mountains and find your friends or get supplies much faster!
Having these roads also helped the Inca government manage their big empire. This means they could send messages and keep everything running smoothly. Plus, the roads were so well built that they were used for hundreds of years, even after the Inca Empire was gone!
So, I think the road system was the greatest achievement of the Incas because it helped them stay connected and strong, making their empire successful for a long time.
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