When Ceasefire Line came into existence:

1. 1947
2. 1949
3. 1972
4. 1997

The Ceasefire Line (CFL) was established in 1949 after the First Indo-Pakistani War, formalized by the Karachi Agreement. It divided Kashmir between India and Pakistan until 1972, when it was replaced by the Line of Control (LoC) post-Simla Agreement.