Step 1: The Situation after Independence.
After India gained independence in 1947, Kashmir, a princely state, had the option to join either India or Pakistan. The Maharaja of Kashmir, Hari Singh, initially chose to remain independent.
Step 2: The Tribal Invasion.
In 1947, tribes from Pakistan invaded Kashmir, leading Maharaja Hari Singh to seek military help from India. In exchange for military assistance, the Maharaja signed the Instrument of Accession, agreeing to join India.
Step 3: Indian Control.
Following the signing of the Instrument of Accession, Indian troops were sent to Kashmir, and the region became an integral part of India. The Kashmir conflict later led to several wars and political disputes, but Kashmir remained part of the Indian Union.