The original term of was descriptive of lower-class people who performed manual labor.

The correct answer would be "coolie" as it was used to connote somebody who performs thankless, backbreaking physical labor. The word is often explained as being part of the indentured labor system that followed the abolition of slavery in the 1800s, particularly gaining popularity in the mid- to late-1800s. It is often almost exclusively used in relation to Asian laborers, especially Indian and Chinese people.

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada