The inca had advanced knowledge of engineering. what did the inca build to keep their empire connected? a. a carriage pulled by horses b. a network of telegraph wires c. a collection of colorful pottery d. a system of roads and bridges

To keep their empire connected since they had advanced knowledge of engineering, the Inca built;

D. A system of roads and bridges

The system of roads an bridges provided the movement of armies, people, and goods and also providing an important physical symbol of imperial control.

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