Which of the following is not something that the maya and aztec cultures had in common? both lived on the yucatán peninsula. both developed a writing system. both calculated the movement of the planets. both developed two calendars.

The correct answer is A) both lived in the Yucatan Peninsula.

The thing that Aztecs and Mayans did not have in common was " both lived in the Yucatan Peninsula.

The Aztecs did not live in the Yucatan peninsula. They lived in the great city of Tenochtitlan, in what today is downtown Mexico City, in the center of the Mexican Territory. The Mayans did live in the Yucatan Peninsula in what today is the state of Yucatan, the state of Quinta Roo, and the state of Chiapas, Mexico. The Mayans also inhabited territories of Belize and Guatemala. Both countries have a border with Mexico.