Southwest of the ancient city of mountain living environment is the traditional urban-based Plain Etiquette an important complement to the ancient city system.
研究西南山地古城的人居环境是对以传统平原礼制城市为主的古城体系的重要补充。
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Some scholars argue that the concentration of water within the urban core of these sites provided a centralized source of political authority for Maya elites based largely on controlled water access.
June 10, 2005—Deepali Tewari remembers only too well the beginnings of plans to have the local people as the key drivers of urban community based projects in Nigeria in the spring of 2000.