as an empire on top of mountains so no intruders could get in.
Answer choice b is correct
Answer:Assyrian Empire
Aqueducts in Mesopotamia
The first sophisticated long-distance canal systems were constructed in the Assyrian Empire in the 9th century BCE and incorporated tunnels several kilometres in length. These engineering feats permitted the aqueducts to be constructed in a more direct line between source and outlet.
Explanation:
The U.S. government tries to encourage innovation in the marketplace with Technological Innovation and Innovation as in ingenuity in business.