Question

Why is the growth of nationalism in the colonies linked to an anti-colonial movement?

Answer 1

Hint
Anti-colonial nationalism takes place when a colony's different peoples come together (e.g. through tribal and other social boundaries) and determine that they have a shared national identity, and they can control themselves better than their colonial rulers.

Complete answer:
Let's understand this with the help of Indian nationalism.
National Consciousness was an outcome of the overall impact of British rule and its exploitative policies.
The main role played by British Imperialism and Colonialism was to foster the Indians' feelings of patriotism and nationalism. The realization that colonial rule was the key cause of the emotions of India. Not only did British rule invade Indian territory, but they also used their political hold to systematically destroy Indian agriculture, commerce, and industries. Via various kinds of taxation, duties, and monopolies beyond the usual ability of the citizens, they tried to suck out as much money as possible.
In India, as in any other region, the growth of modern nationalism is closely linked to the anti-colonial movement.
People started to discover their unity in the course of their war with colonialism.
The anti-colonial movement gave the individuals with whom they could identify and could come on a common forum a strong problem.
While each class or group of individuals believed that under colonialism they were being marginalized, the consequences of colonialism were felt differently.
Hence in the colonies, the growth of nationalism is related to an anti-colonial movement.

Note
Colonization affected the rights of citizens, and during the war against colonial control, nationalist sentiments surged. For people from various walks of life, the sense of injustice and exploitation became a common bond, and this culminated in the growth of nationalist ideals. Thus in the colonies, the growth of nationalism is related to anti-colonial movements.