Final answer:
The Avenue of the Dead is a remarkable feature of Teotihuacan, flanked by the Pyramids of the Sun and Moon and other important structures, reflecting the city's social and religious significance.
Step-by-step explanation:
The Avenue of the Dead is a central feature of the ancient Mesoamerican city of Teotihuacan, which flourished between the 1st and the 7th centuries A.D. This grand avenue served as a processional pathway which astonishingly measures 130 feet (40 meters) wide and 2.5 miles (4 kilometers) long. Lined with majestic structures like the Pyramid of the Sun and the Pyramid of the Moon, it formed the urban backbone of the city, reflecting Teotihuacan's complex societal and religious structures.
Furthermore, Elaborate tombs and burial customs are significant aspects of various ancient civilizations, demonstrating the route and journey of the deceased from life to the afterlife. Teotihuacan's extraordinary architecture and its Avenue of the Dead are emblematic of the city's significance and the ancient cultural practices of its people.