Step 1: Understanding the Concept:
South Asian geopolitics is defined by various bilateral agreements and interventions aimed at resolving water disputes, ending conflicts, or promoting regional cooperation.
Step 2: Detailed Explanation:
Matching each event to the primary nations involved:
- Farakka Treaty (A): A water-sharing agreement concerning the Ganges River between India and Bangladesh (2).
- Tashkent Agreement (B): A peace treaty signed between India and Pakistan (1) to end the Indo-Pakistani War of 1965.
- IPKF Mission (C): The Indian Peace Keeping Force (IPKF) was a military contingent sent to manage the civil war between India and Sri Lanka (4).
- Mahakali Treaty (D): An agreement regarding the integrated development of the Mahakali River signed between India and Nepal (3).
Step 3: Final Answer:
The resulting match is A-2, B-1, C-4, D-3.
This corresponds to option (A).