The urbanization in the world has increased from 30.1% in 1950 to 51.3% in 1990 while the shift of urbanization in more economically developed countries (MEDCs) is increasing by 74.8% in 1990 from 52.4% in 1950. In addition to this, the progress witnessed in the less economically developed countries (LEDCs) is quite massive due to the increased economy leading to the increase of urbanization by around 34.2% in 1990 from 17.5% in 1950. Observing the historic trend, it is estimated that...