The answer to this item is unconscious mind. Although Freud was not responsible for the determination of conscious and unconscious, he for certain made it popular. According to him, unconscious mind is that which is not accessible by our conscious mind but affects the way a person thinks, acts, or behaves.
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: