Colonialism is the establishment and expansion of colonies in one territory by people from another territory. Colonialism describes the establishment of countries like India, Australia, Brazil, Algeria, which were all European colonies between early 1500s and mid 1900s.
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Imperialism refers to formal or informal economic and political domination of a country by the other through military force. Imperialism is a term used to describe a situation where a foreign government rules a country without formal settlement. American domination of Philippines and Puerto Rico can be cited as the best examples of Imperialism. Iraq and Afghanistan also make imperial states of recent times.
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