I believe the answer is: 3. The canals and temples in the city show advanced engineering skills.
The site shows that the Aztec civilization had developed a very advanced irrigation system that utilize different elevation to obtain water for their agricultural field. Their system was later adopted by the spanish empire who invaded their territory.
She is <span>enthusiastic. I hope this helps. :)</span>
He conserved forests and wildlife after Harold Ickes convinced him to build a wildlife reserve.
Revere drew handbills showing the troops shooting colonist, but Adams had nothing to do with it. <span>He was the lawyer for the troops who were put on trial for the event. </span>