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O Super city ­ has a population of over 5 million
O Mega city ­ has a population of over 10 million
O Megalopolis ­ very large urban area that contains
several metropolitan centres
O World cities ­ cities of power based on trade,
political strength, innovation and communications…read more

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World Cities
O Important because of their connections with the rest
of the world
O Four main types:
Major capitals and commercial cities in developed
countries (the core) e.g. London and Tokyo
Major capitals and commercial cities in developing
countries (the semi-periphery) e.g. Rio de Janeiro and
Singapore
Less important capitals and commercial cities e.g.
Sydney, Madrid
Less important developing world cities e.g. Bangkok
and Mexico City…read more

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Urbanisation
O Growth in proportion of the world's population living
in towns and cities
O Occurs through two processes:
Rural to urban migration
Natural increase…read more

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Rural to Urban
Migration
O Rural-urban migration in the developing world is
currently responsible for much urban growth
O Most of the world's population in developed countries
already live in urban areas (more than 80% of the UK's
population live in urban areas)
O Most Rural-urban migration in developed countries
has already happened during the late 18th and early
19th centuries (industrial revolution)
O There is rapid rural-urban migration in low and
middle income countries…read more

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Natural Increase
O Natural increase occurs in the developing world
O Natural increase in low income countries is high
O Rural-urban migrations tend to be young and have
high fertility; this boosts rates of natural increase in
cities
O In the developed world, counter-urbanisation trends
balance the influx of migrants to towns and natural
increase is low due to fertility rates…read more

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