Step 1: Understanding the events.
- 1) Economic liberalisation: Economic liberalisation in India began in 1991, which led to a shift towards a market-driven economy.
- 2) Implementation of Mandal Commission recommendations: The Mandal Commission report was implemented in 1990, leading to reservations in government jobs for OBCs.
- 3) End of Emergency: The Emergency imposed by Indira Gandhi ended in 1977 after being in place from 1975 to 1977.
- 4) Launch of operation Barga: Operation Barga was launched in 1978 in West Bengal to issue land rights to sharecroppers.
Step 2: Chronological order.
The correct chronological order of these events is:
1. End of Emergency (1977)
2. Launch of operation Barga (1978)
3. Implementation of Mandal Commission recommendations (1990)
4. Economic liberalisation (1991).
Final Answer: 3, 4, 2, 1.