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An urban area[a] is a human settlement with a high population density and an infrastructure of built environment. This is the core of a metropolitan statistical area in the United States, if it contains a population of more than 50,000.[2]
Urban areas originate through urbanization, and researchers categorize them as cities, towns, conurbations or suburbs. In urbanism, the term "urban area" contrasts to rural areas such as villages and hamlets; in urban sociology or urban anthropology, it often contrasts with natural environment.
The development of earlier predecessors of modern urban areas during the urban revolution of the 4th millennium BCE[3] led to the formation of human civilization and ultimately to modern urban planning, which along with other human activities such as exploitation of natural resources has led to a human impact on the environment.
- ^ Florida. "The Real Powerhouses That Drive the World's Economy". Bloomberg.com. Retrieved December 21, 2024.
- ^ "Federal Register/Vol. 75, No. 123/Monday, June 28, 2010/Notices" (PDF). US Census Bureau. Retrieved July 22, 2023.
- ^
Morris, A.E.J. (2 December 2013) [1972]. "The Early Cities". History of Urban Form Before the Industrial Revolution (3 ed.). London: Routledge. p. 1. ISBN 9781317885146.
[...] the Bronze Age, starting between 3500 and 3000 BC [...]. During this [...] period the first urban civilizations were firmly established.
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