Which ancient civilization was prominent in Mexico before Spanish colonization?

The Aztec civilization was a dominant force in what is now Mexico before the arrival of Spanish colonizers in the early 16th century. The Aztecs established a powerful empire known for its complex society, monumental architecture, and extensive trade networks. The capital city, Tenochtitlan, was located on an island in the middle of Lake Texcoco and was one of the largest cities in the world at its peak. The Aztecs were renowned for their advancements in agriculture, astronomy, and art, as well as their unique religious practices that included a pantheon of gods and ritual sacrifices. Their influence and achievements are still evident in modern Mexican culture and history.