Long ago, many people lived in Mexico.
Long ago, people lived in central Mexico.
Long ago, a group called the Mexica moved to central Mexico. 
The Aztec Empire was a powerful group of lands in central Mexico. It was also called the Triple Alliance. This alliance was made of three city-states. These cities were Tenochtitlan, Texcoco, and Tlacopan.
The empire worked through a system called indirect rule. This meant the Aztecs did not rule every single town directly. Instead, they let the local leaders stay in power. These leaders had to follow certain rules to keep their jobs. They had to pay tribute to the alliance every six months. Tribute was a payment made with goods or resources. 
The history of the Mexica people began with a long journey. They came from a mythical place called Aztlan. 

Many leaders helped shape how the empire functioned. A leader named Itzcoatl helped start the Triple Alliance in 1428. After him, Moctezuma I became a very important ruler. He made new laws to organize the people. He also built schools in every neighborhood. Some schools were for commoners to learn religion and military skills. Other schools were for the nobility and priests.
Religion was a huge part of daily life for the Aztecs. They believed in many different gods of nature. They also believed in a supreme god called Ometeotl.
The Aztec Empire was a powerful political and military alliance in central Mexico. It is often called the Triple Alliance because it was formed by three Nahua city-states. These three cities were Tenochtitlan, Texcoco, and Tlacopan.
The empire operated through a system of hegemonic or indirect rule. This means the Aztecs did not always govern every town directly. Instead, they allowed the original leaders of conquered cities to stay in power. These local rulers had to follow specific rules to remain in charge. They had to pay tribute to the alliance every six months. Tribute consisted of various goods and resources sent to the empire. 
The history of the Mexica people began with a long migration. They believed they came from a mythical place called Aztlan. 

Conflict shaped the rise of the Triple Alliance. In 1426, a succession crisis caused a civil war in the city of Azcapotzalco. A leader named Maxtla took the throne and fought against the Mexica. The Mexica ruler, Itzcoatl, defied Maxtla's authority. Itzcoatl joined forces with the king of Texcoco and the city of Tlacopan. In 1428, this coalition defeated Azcapotzalco. By 1430, the three victors signed a treaty to form the Triple Alliance. They agreed to share conquered lands and divide the tribute collected from others.
As the empire grew, Tenochtitlan became the most dominant city. Leaders like Itzcoatl and Moctezuma I implemented major reforms. Tlacaelel, a key figure, helped rewrite Aztec history to place the Mexica at the center. Moctezuma I also changed how the empire managed its people. He replaced uncooperative kings with puppet rulers loyal to the Mexica. He also created a new tribute system to tax people directly.
Religion was deeply integrated into the Aztec state and social life. They practiced a form of monistic pantheism. This means they believed in a supreme god called Ometeotl. However, they also worshipped a diverse pantheon of many lesser gods.
The empire's structure allowed for both strict control and local variety. For example, the title of Cihuacoatl was created to manage domestic affairs. This position was held by officials like Tlacaelel. The empire also used a system of non-hereditary nobility. Commoners could earn a special title through great military or civil service. This allowed for some movement within the social hierarchy. Despite this complexity, the empire faced a major turning point in 1519. When the Spanish arrived, the alliance was already a massive, interconnected system. The empire finally fell in 1521 after fighting the Spanish and their native allies.
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