A megapolis is a Western deformation of the Greek word that derived from Greek: μέγας - great and Greek: πόλις - city therefore literally a great city. Since in Greek: πόλις is feminine, the correct term is "megalopolis". The metric prefixmega- represents the number of million (1,000,000) in the metric system.
A megalopolis, also known as a megaregion, is a clustered network of cities. Gottmann defined its population as 25 million. Doxiadis defined a small megalopolis a similar cluster with a population of about 10 million. America 2050, a program of the Regional Plan Association, lists 11 megaregions in the United States and Canada. Literally, megalopolis in Greek means a city of exaggerated size where the prefix megalo- represents a quantity of exaggerated size.Megapolitan areas were explored in a July 2005 report by Robert E. Lang and Dawn Dhavale of the Metropolitan Institute at Virginia Tech. A later 2007 article by Lang and Nelson uses 20 megapolitan areas grouped into 10 megaregions. The concept is based on the original Megalopolis model.
Modern interlinked ground transportation corridors, such as rail and highway, often aid in the development of megalopolises. Using these commuter passageways to travel throughout the megalopolis is informally called megaloping. This term was coined by Davide Gadren and Stefan Berteau.
The central Liaoning city cluster in China. Within 150 km from its center Shenyang (7.2 million), it has Fushun (3 million), Anshan City (3.6 million), Benxi (1.5 million), Liaoyang (1.8 million), Yingkou (2.2 million), Panjin (1.2 million), and Tieling (3.4 million), with a total population of 23 million. And it can be further extended to Dalian (6.2 million), Fuxin (2 million) and Dandong (2.4 million). This area used to be the most industrialized region in China. It declined during 1980s-1990s, but in recent years, it has rapidly revived.
Greater Tehran: A region located in Iranian Tehran and Alborz Province in central Northern Iran with its influence expanding in Qom Province, Qazvin Province and Mazandaran Province, home for at least 15 million people, it is one of the most populous urban areas in the Greater Middle East and the surrounding regions. Tehran was a small village 200 years ago when it was first chosen as the Capital city and it has been growing at a very fast rate.
Largest megalopolis in South East Asia (in decreasing order of population):
Milan metropolitan area in Italy - With 3,7 million. According to OECD, with approximately 7.5 million. Potentially some parts of the SwissCanton Ticino can be considered within the metropolis, thus making it a transnational city; however, this is not recognized by the OECD definition.
Composite image of the Earth at night, created by NASA and NOAA. The brightest areas of the Earth are the most urbanized, but not necessarily the most populated. It is possible to see various metropolises close to each other in South America, but to the exception of a few central Argentine cities close to Buenos Aires, only in between Rio de Janeiro and São Paulo there is a continual strip of urbanization (that is not as thin as the Argentine ones).
São Paulo, Rio de Janeiro, Santos and Campinas: which includes parts of Minas Gerais, Rio de Janeiro and São Paulo states, that spreads throughout much of the Southeast Region of the country, a conurbation which brings together more than 450 cities – defined primarily by metropolitan areas of Rio de Janeiro and São Paulo and the whole catchment area around and between them – separated by about400 km (249 mi) – is by far the most urbanized and industrialized in the country and Latin America. Official population 2010 census: 45,678,990;
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