The most popular emperor of the Aztec empire was

Montezuma II, also spelled Moctezuma, (born 1466—died c. June 30, 1520, Tenochtitlán, within modern Mexico City), ninth Aztec emperor of Mexico, famous for his dramatic confrontation with the Spanish conquistador Hernán Cortés.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.