What major city did the Aztecs establish around A.D. 1325?

The Aztecs established the major city of Tenochtitlan around A.D. 1325, which became the capital of their empire and one of the largest cities in the world at that time. Tenochtitlan was built on an island in the middle of Lake Texcoco, in present-day Mexico City. The location was chosen for its strategic advantages, including access to fresh water and resources from the surrounding lake. The city's design included complex canal systems and filled land for agriculture, reflecting the advanced engineering and agricultural techniques of the Aztecs.

Tenochtitlan became a key center for trade, culture, and politics within the Aztec civilization, marking a significant achievement in Mesoamerican history. The other options listed—Tikal, Palenque, and Chichen Itza—were prominent cities of other Mesoamerican cultures, such as the Maya, and were not established by the Aztecs. Tikal and Palenque were major urban centers during the Classic Maya period, while Chichen Itza is known for its role in the Postclassic period of Maya civilization.