(1) The Aztec had their own script and languages but they assimilated all they could learn from Maya society. (Nahuatl script or logograms and pictographs).
(2) Their manuscripts describe how the Maya performed their astronomical observations.
(3)They manufactured of rubber and used a rubber ball in the ball
(4) Public latrines were found along all highways. And to prevent pollution of Lake Texcoco canoes transported the sewage from Tenochtitlán to the mainland every morning