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  2. Settlement hierarchy - Wikipedia

    en.wikipedia.org/wiki/Settlement_hierarchy

    Megacity – contains more than ten million residents in total and is often a conurbation or metropolis grown into a continuous urban area. Megalopolis – a group of metropolitan areas having grown together, stretching across a larger region and across regional borders.

  3. Megaregions of the United States - Wikipedia

    en.wikipedia.org/wiki/Megaregions_of_the_United...

    The megaregions of the United States are eleven regions of the United States that contain two or more roughly adjacent urban metropolitan areas that, through commonality of systems, including transportation, economies, resources, and ecologies, experience blurred boundaries between the urban centers, perceive and act as if they are a continuous urban area.

  4. Conurbation - Wikipedia

    en.wikipedia.org/wiki/Conurbation

    A conurbation is a region consisting of a number of metropolises, cities, large towns, and other urban areas which, through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most cases, a conurbation is a polycentric urbanised area in which transportation has developed to link ...

  5. Megalopolis - Wikipedia

    en.wikipedia.org/wiki/Megalopolis

    A megalopolis (/ ˌ m ɛ ɡ ə ˈ l ɒ p ə l ɪ s /) or a supercity, [1] also called a megaregion, [2] is a group of metropolitan areas which are perceived as a continuous urban area through common systems of transport, economy, resources, ecology, and so on. [2]

  6. Megacity - Wikipedia

    en.wikipedia.org/wiki/Megacity

    Gismondi's model of Rome in the time of Constantine. For almost five hundred years, during the period of the Republic and later of the Empire, Rome was the largest, wealthiest, and most politically important city of the ancient world, rulling over Europe, Western Asia and Northern Africa.

  7. Urbanization - Wikipedia

    en.wikipedia.org/wiki/Urbanization

    Urbanization over the past 500 years [13] A global map illustrating the first onset and spread of urban centres around the world, based on. [14]From the development of the earliest cities in Indus valley civilization, Mesopotamia and Egypt until the 18th century, an equilibrium existed between the vast majority of the population who were engaged in subsistence agriculture in a rural context ...

  8. Urban area - Wikipedia

    en.wikipedia.org/wiki/Urban_area

    Greater Tokyo in Japan, the world's most populated urban area, with about 40 million inhabitants as of 2022 A satellite view of the U.S. Northeast megalopolis at night, the world's most economically productive megalopolis [1] with over 50 million residents, centered on New York City Greater São Paulo at night, as seen from the International Space Station Aerial view of Greater Adelaide, the ...

  9. Great Lakes megalopolis - Wikipedia

    en.wikipedia.org/wiki/Great_Lakes_megalopolis

    The Great Lakes megalopolis consists of a bi-national group of metropolitan areas in North America largely in the Great Lakes region.It extends from the Midwestern United States in the south and west to western Pennsylvania and Western New York in the Northeastern United States and northward through Southern Ontario into southwestern Quebec in Canada.