I really don't know
The 15th century
1521
they reached their peak in the 1300s
Before the arrival of Spanish conquistadores in the 16th century, the Aztec Empire had almost no vulnerabilities. The Empire was at its peak when Cortes and his men arrived to Mexican shores. If you mean what brought down the Aztec Empire, such weaknesses included three things: lack of enough technology - horses, gunpowder, iron armors - to repeal the Spanish advance; lack of resistance to smallpox, which decimated the Aztec population and helped Cortes gaining an upper hand against the Aztecs. Finally, the Quetzalcoatl myth, which helped Cortes to become close to Montezuma so he could prepare and implement a sneak attack on the Aztec emperor.
1321-1521
The 15th century
1521
The Aztec Empire reached a size of 84,942 sq. miles or 220,000 sq. km spanning North America in 1520 under Moctezuma II.
At its peak, the estimated population of the Persian Empire was around 50 million people.
The Aztecs built their empire second, after the Maya civilization. The Aztec Empire flourished in Mesoamerica from the 14th to the 16th century, while the Maya civilization reached its peak in the Classic period from 250 to 900 AD.
they reached their peak in the 1300s
At its peak, Tenochtitlan, the capital city of the Aztec Empire, had an estimated population of around 200,000 to 300,000 inhabitants. It was one of the largest and most advanced cities in the world at the time.
The Aztec Empire, at its peak in the early 16th century, covered an area of approximately 80,000 square miles, which is about double the size of Ohio. It encompassed a large portion of central Mexico, including the Valley of Mexico where the capital, Tenochtitlan, was located. In contrast to Ohio's relatively smaller size, the Aztec Empire was a vast and complex civilization with a diverse geography and significant urban centers.
1321-1521
This was created for farmers to extend the daylight hours during peak growing season.
The last Indian empire in Mexico was the Aztec Empire. It reached its peak in the early 16th century before falling to Spanish conquistadors led by Hernán Cortés in 1521. The Aztec civilization is renowned for its impressive architecture, complex society, and rich cultural practices. After its fall, the region became part of Spanish colonial rule.
Aztec Peak is the highpoint of the Sierra Ancha Mountains. This relatively unknown mountain range is located in the Tonto National Forest. Aztec Peak is also located in the Sierra Ancha Wilderness Area. Although the Sierra Ancha Mountains are not very impressive, they do have some precipitous box canyons, towering vertical cliffs, and pine-covered mesas. Elevations range from 4,000' near Cherry Creek to 7,748' atop Aztec Peak. A primitive road leads all the way to the summit of Aztec Peak, where a fire lookout is located. Aztec Peak is really just a rounded hill partially covered with trees, and it's not easily recognizable from a distance. There are many trails, roads, and campgrounds in the Sierra Ancha Mountains. With a prominence of 2,468', Aztec Peak is big enough to make an appearance on the Arizona Prominence Map.