Punjab Reorganisation Act, 1966
The Punjab Reorganisation Act was passed by the Indian Parliament on 18 September 1966, dissolving the former state of East Punjab. Out of the former East Punjab, the new state of Haryana was created; territory was transferred to Himachal Pradesh, then a Union territory;, and the city of Chandigarh became a temporary Union territory to serve as the capital of both the residual Punjab and Haryana. This separation was the result of the Punjabi Suba movement, which agitated for the creation of a Hindi speaking-majority state and a Punjabi speaking-majority state.
