The Aztecs were an ancient civilization that lived in Mexico over 500 years ago. Archaeological excavations have revealed many aspects of their culture and daily life. The Aztecs were both skilled warriors and craftsmen, known for building temples and pyramids and practicing human sacrifice. They developed advanced agricultural techniques like creating artificial islands called chinampas for farming. While the Aztecs dominated the region for many years, their empire fell after the arrival of Spanish colonizers who brought diseases that killed much of the population.