Nationalism spreads when people began to …

The spreading of nationalism took place due to following factors
(i) United Struggle Different religious groups and communities unitedly struggled against the British rule.
(ii) Cultural Processes Unity spread through various cultural processes like history, folklore, songs and symbols that helped in spread of nationalism.
(iii) Common Identity The painting of‘Bharat Mata was commonly identified as motherland and affected the people equally.
(iv) Revival of India Folklore Reviving the folklore through folk songs, legends helped in promoting traditional culture and restore a sense of pride in the past history and culture.
(v) Role of the Leaders Leaders like’ Mahatma Gandhi, Jawaharlal Nehru aroused the feelings of nationalism through their motivational speeches and political activities.
Thus, it can be concluded that nationalism spread, when people began to believe that they were all part of the same nation.