What changes does colonialism bring (in terms of power, gender, economy)?

In what ways were Vietnamese reactions to the French medical polices demonstrations of resistance to colonial rule?Why was Hanoi such as important symbol for the French colonial empire?What changes does colonialism bring (in terms of power, gender, economy)? What limitations are there on such changes? What are the legacies of colonialism?How was Hanoi a classic dual city? What were the structural inequalities of the colonial urban environment?What sources do we have to help us understand life of the colonized? What are the limitations of such sources?