What role did nationalism play in the decolonization process of the British, French, Dutch, and Portuguese empires?

It led to the collapse of colonial rule and independence of colonies

The correct answer is Option 1 - It led to the collapse of colonial rule and independence of colonies
Nationalism was a key factor in the decolonization process, as it fueled movements that sought to end colonial rule and establish independent nation-states in Asia and Africa.

Nationalism also accompanied and contributed to the break up of large empires such as the Austro-Hungarian and Russian empires in the early twentieth century in Europe as well as the break-up of the British, French, Dutch and Portuguese empires in Asia and Africa. The struggle for freedom from colonial rule by India and other former colonies were nationalist struggles, inspired by the desire to establish nation-states which would be independent of foreign control.