Urbanization has accelerated dramatically with the advent of industrialization about 200 years ago. At that time, large numbers of people moved to cities in search of jobs, mostly in new factories. However, the most rapid growth has taken place over the past 50 years. Less than one-third of the world's population lived in cities in 1950; about two thirds of humanity is expected to live in urban areas by 2030. Most of that urbanization is taking place in Asia, Africa, and Latin America.
United Nations, 2012: An urban world,
graphic (compares urban populations in 1950, today and 2050). Push "play".
Visualising the growth of 30 major cities over the last 200 years:
Here are some specific cities:
Lagos, Nigeria:
Tokyo:
Mexico City:
Paris:
Here is the complete list.
Montreal slums of the 1950's - watch this 14-minute film!
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Guess these three urban areas:
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