The Aztecs Control Central Mexico

Explanation
Teotihuacán is considered the first major civilization in Central Mexico because it was one of the largest and most influential cities in the region during its peak from 100 BCE to 650 CE. It was known for its advanced urban planning, impressive architecture, and significant cultural and religious influence. Teotihuacán's influence extended beyond its borders, as evidenced by its architectural and artistic style being adopted by later civilizations in Mesoamerica. Its importance in shaping the cultural and political landscape of Central Mexico makes it the correct answer for the first major civilization in the region.

Explanation
Topiltzin is the correct answer because he was a Toltec ruler who attempted to introduce religious reforms sometime after 1000. He is also known as Ce Acatl Topiltzin Quetzalcoatl, and is believed to have played a significant role in transforming the Toltec religion by promoting the worship of the deity Quetzalcoatl. His attempts to change the religion were met with resistance, leading to his eventual exile from the Toltec capital of Tula.

Explanation
Huitzilopochtli is the correct answer because he was the sun and warfare god of the Aztecs. He was one of the most important deities in the Aztec pantheon, associated with the sun, war, and human sacrifice. Huitzilopochtli was believed to provide strength and protection to the Aztec people in battle, and his worship played a significant role in Aztec society and rituals.

Explanation
The twin temples at the top of the giant pyramid in Tenochtitlán were dedicated to the sun and rain gods. This is indicated by the fact that the sun and rain were highly important and revered entities in the Aztec culture. The sun god, known as Huitzilopochtli, was associated with life and sustenance, while the rain god, known as Tlaloc, was believed to bring fertility and abundance to the crops. Therefore, it is logical to conclude that the twin temples were dedicated to these two significant deities.

Explanation
The arrival of the Spanish was the most worrying event for the Aztecs because it marked the beginning of the conquest and colonization of their land. The Spanish brought with them advanced weaponry, diseases, and a desire for power and control. This event ultimately led to the downfall of the Aztec civilization and the loss of their culture, land, and lives.