Pull factors are the attractive factors by which an individual is attracted to change his place of living. Following are some of the pull factors. Health facilities, High standard of living, High standard of education, Better recreational facilities
The extension of man’s power over nature has been the primary condition of the growth of modern cities. Man has exploited natural resources through technological improvements to a great extent. Now few people can supply basic needs of many people, whenever a society or group within it, gains control over resources, cities grows and fulfill the basic needs of life.
Segregation. In this step the iconological difference occurs due to diversity in activities. In these activities some are identified geographically or related to particular areas of the city. In this way city develops a distinct financial district, a trade centre and a residential sector, each separate from the others.
Tempo of urbanization is one measure it is the speed of urbanization which shows the rate of change brought about by urbanization. It is calculated on the basis of annual population growth rates. The demographers tried out to find how the urban change had occurred and whether it was linear, geometric or hyperbolic (curve).
According to United Nations, localities are of three types, administrative, economic and ecological urban locality is a population cluster, in which the inhabitants live in closely adjacent structures urban locality has a commonly recognized name urban localities are not similar but UN has classified it into three divisions.
The term urbanization is commonly used in demography as well as in geography. The most common measure of urbanization is the proportion of the total population of an area that lives in the urban areas as defined in the census. The process of urbanization has been going on since pre-historic times. However the range of urbanization rose sharply in the 19th and 20th centuries.