In three sentences tell me what justifications European colonies would use for colonialism. What are your initial thoughts on the practice of colonialism?

Read To Understand
Colonialism is the practice of one country exploiting indigenous people for economic and political benefits. Colonialism was often justified by the assumption of European countries that they had a duty to assert their country's power and spread their religious values. Often scholars quote their motivation as the three G's God, Glory, and Gold. Colonialism spread new technologies and modern medicine all over the rule. Unfortunately, Colonialism often resulted in human rights violations and the spread of diseases.