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Since emergence of city and the continuous increase in population which demands provision of a suitable place to locate various land uses, as cities began to grow and expand continuously and spread horizontally on large scale, especially in the agricultural areas. Most of Arab cities were characterized by urban sprawl to accommodate the population increase in the city, and to adapt the cultural habits in the Arab society that is not preferring the vertical expansion. For the Urban sprawl many problems, like overtaking the agricultural lands and orchards and ecological areas, as well as increasing the demands on roads and infrastructure, and this is accompanied by requiring more natural resources, and increasing pollution, as well as scattering the city's urban fabric in addition to blurring of physical and architectural identity. The problem of research considers urban sprawl is one of the most vital problems of cities. Most of Arab cities suffer from urban sprawl through urban growth and expansion and thus facing from urban problems, including overrun green land, increasing cost of infrastructure and negative impacts on city's environment. Research explaining the stages of urban development for Riyadh city in Saudi Arabia, where it began as a small compacted city to expand excessively adopting the alternative urban sprawl and

الانتشار الحضري سمة المدن العربية مدينة الرياض وبغداد انموذجاً