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Humans transformed landscapes at an unprecedented scale and pace during the 20th century, creating sprawling urban areas in affluent countries and large-scale agricultural expanses in tropics. To date, attempts to explain these processes in other disciplines have had a disembodied, a historical quality to them. A sociological account of these changes emphasizes the role of strategic actions by states and coalitions of interested parties in transforming landscapes. It identifies the agents of change and the timing of transformative events. Case studies of suburban sprawl and tropical deforestation illustrate the value of the sociological approach and the wide range of situations to which it applies.

"Like many developing countries Ecuador has experienced extensive ubanization in the past twenty-five years as well as a shift in the pattern of rural population change between the 1960s and 1970s. Rural places with difficult access to cities (without roads and located far from cities) gained population during the 1960s but lost population during the 1970s. Rural places with easy access to cities (i.e., located near cities or on all-weather roads) continued to gain population during the 1970s. The explanation for the differential ability of rural places to retain their population during the 1970s focuses on increases in labor circulation by peasants and growth in the numbers of small, urban-oriented manufacturing and agricultural enterprises in accessible rural areas. The article concludes with a discussion on the implications of these findings for policies to reduce rates of rural-urban migration.", (excerpt)