**Different Social Groups in the Non-Cooperation Movement of 1921:**

1. **Students:**
- Students played a significant role in the Non-Cooperation Movement of 1921.
- They were inspired by the idea of independence and were eager to participate actively in the fight against British rule.
- Students hoped to bring about a change in the political landscape of the country and establish a free and independent India.
- They struggled against the oppressive British education system, which they believed aimed at producing a subservient class of individuals.
- By joining the movement, students aimed to challenge the British authorities and demand reforms in the education system.

2. **Peasants:**
- The peasants were another social group that actively participated in the Non-Cooperation Movement.
- They faced numerous struggles due to exploitative land revenue policies and high taxes imposed by the British.
- Peasants joined the movement with the hope of obtaining relief from oppressive economic conditions and securing land rights.
- They aspired for better agricultural practices, fairer land distribution, and reduced taxes.
- By participating in the movement, peasants aimed to challenge the British authorities and demand agrarian reforms.

3. **Women:**
- Women also played a crucial role in the Non-Cooperation Movement.
- They joined the movement in large numbers to fight for their rights and contribute to the struggle for independence.
- Women hoped to gain social and political equality, access to education, and the right to participate in decision-making processes.
- They struggled against various social evils like child marriage, purdah system, and dowry.
- By participating in the movement, women aimed to challenge patriarchal norms and gain equal status in society.

**Reasons for Joining the Non-Cooperation Movement:**

1. **Desire for Independence:**
- The different social groups mentioned above joined the Non-Cooperation Movement with the common hope of achieving independence from British rule.
- They were inspired by the idea of a free and independent India and were willing to make sacrifices for this cause.
- The movement provided an opportunity for them to actively participate in the struggle for independence and contribute to the national cause.

2. **Challenging British Oppression:**
- Each social group faced various forms of oppression under British rule, whether it was in the educational system, economic conditions, or societal norms.
- By joining the Non-Cooperation Movement, these groups aimed to challenge and resist British oppression.
- They believed that by boycotting British institutions, products, and practices, they could weaken the British rule and eventually achieve independence.

3. **Demand for Reforms:**
- Each social group had specific demands and struggles that they hoped to address through the Non-Cooperation Movement.
- Whether it was students demanding educational reforms, peasants seeking agrarian reforms, or women fighting for gender equality, they saw the movement as a platform to voice their concerns and press for necessary changes.
- By uniting under the banner of non-cooperation, these groups aimed to collectively demand reforms and bring about a more just and equitable society.

In conclusion, the Non-Cooperation Movement of 1921 witnessed the active participation of various social groups who joined with the hope of achieving independence, challenging British oppression, and demanding necessary reforms. Students, peasants, and women were among those who actively contributed to the movement, each driven by their own unique struggles and aspirations for a free and independent India.