Increase of Mega Cities

The largest cities in 1950, 1985 and 2005
The largest cities in 1950, 1985 and 2005.
Own illustration, Data: Soja, Kanai 2007

The rapid urbanisation takes place in more and more larger cities around the world. Most of the urban population lives in giant cities that dominate the global urban and economic system which proliferate and expand most rapidly.

Map of the world
Map of the world.
Source: Wikipedia

Tasks:

1. Mark the development of mega cities on the world map above in three different colours:
Year 1950 – blue marks, Year 1985 – green marks, Year 2005 – orange marks

2. What can you notice in respect to the distribution of mega cities on the world map?

3. Estimate possible consequences of this rapid urbanisation.