Geography of Human Location

Why does urbanization change the proportion of people that are employed in the various sectors?

Urbanization means persons moving from the country localities to the cities. How could they hold agriculture after going to the city? Since they can't augment their own food in the cities, what does that state about sales of food in the towns after urbanization?

Urbanization is a process by which country populations become urban inhabitants. The major constituents of urbanization are the move of an ever-increasing work force from agriculture to the non-agricultural part, and a change in community distribution from dispersed country localities to ...