The fact that the world’s cities are getting more and more crowded is well-known. Cities such as Tokyo, Sao Paolo, Bombay and Shanghai are now considered ‘mega-cities’, because of their enormous size and huge populations. There are two main reasons why these and other cities are becoming so crowded; one economic, the other socio-cultural.
First, the primary cause of cities becoming so crowded is economic. As a country develops, its cities become the engines of development, thus jobs are available in these areas. Frankfurt, Istanbul, Bombay and Sao Paolo are all the economic centres of their countries. For example, Tokyo was the motor for Japan’s rapid economic development in the 1960’s and 70’s; as a result, its population increased rapidly. People moved to Tokyo because they could find employment and establish economic security for themselves and their families there.