Question

What is colonialism , urbanisation , de-urbanisation

Answer 1

Colonialism means the policy or practice of acquiring full or partial political control over another country, occupying it with settlers, and exploiting it economically. Urbanization means the process of making an area more urbanAnd de urbanization means Counterurbanization, or de-urbanization, is a demographic and social process whereby people move from urban areas to rural areas. It is, like suburbanization, inversely related to urbanization. It first occurred as a reaction to inner-city deprivation and overcrowding.

Answer 2

taking control over an area with one's own purpose is colonisation. eg.britidh colonised India
establishing industries, companies and other educational institutions and hospital etc. and increasing population, transportsis also urbanisation.
increasing agricultural works and primary works and having less facilities is called deurbanisation.