After the partition of India in 1947, a territorial conflict (The Kashmir conflict) started between India and Pakistan.
Three wars took place between India and Pakistan over this territory; Indo-Pakistani wars in 1947 and 1965 and the Karjil war in 1999.
In 1972, The Simla Agreement established the current line of control between Pakistan and India.
The right choice would be:
The Simla Agreement of 1972 established the current line of control between Pakistan and India.