Symbols and icons helped create nationalism by giving people a common identity to rally around. The image of Bharat Mata inspired devotion to the motherland. The tricolour flag (with lotus and crescent moon) united Hindus and Muslims. Carrying or holding the Swaraj flag aloft during marches became an act of defiance against colonial rule.
Source: Chapter 2, The Sense of Collective Belonging
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The examiner expects two specific examples of symbols/icons with a brief explanation of how each fostered nationalism. Mentioning Bharat Mata + flag (Swadeshi or Swaraj) covers the key points from the passage. Avoid writing about folklore or history — those are separate means; the question asks specifically about symbols and icons.