Final answer:
The answer is sunken court. In different ancient civilizations, sunken courts or plazas were used as ceremonial centers.
Step-by-step explanation:
The answer to the question is sunken court. In various ancient civilizations, sunken courts or plazas were used as monumental ceremonial centers. For example, in the Indus Valley cities, a sunken court may have served as the monumental ceremonial center. Teotihuacan, another ancient city, had a sunken plaza called the Ciudadela, surrounded by temple platforms. Similarly, in Ancient Puebloan sites, the ceremonial center of the village was often a circular sunken structure called a kiva.