The capital city of the undivided Province of Punjab, Lahore, was allocated to the Pakistani West Punjab during the partition of British India in 1947, so a new capital for Indian Punjab was built at Chandigarh. Shimla was named temporary capital of the Punjab until Chandigarh was completed in 1960.
After years of protest by Akali Dal and other Sikh organisations finally Punjab was divided along linguistic basis in 1966. On 1 November 1966, the Hindi-speaking southern half of Punjab became a separate state, Haryana, and the Pahari speaking hilly areas in north east were given to Himachal Pradesh. Chandigarh was on the border between the two states and became a separate union territory but serves as the capital of both Punjab and Haryana. During the 1970s, the Green Revolution brought increased economic prosperity for the Punjab, mainly due to the late Pratap Singh Kairon. However, a growing polarisation between the Indian National Congress central government and the main Sikh political party, the Shiromani Akali Dal, developed during the 1970s. Hostility and bitterness arose from what was widely seen by the Akali Dal as increasing alienation, centralization and discriminatory attitudes towards Punjab by the Government of India. This prompted the Shiromani Akali Dal to pass theAnandpur Sahib Resolution, which asked for granting maximum autonomy to the region of Punjab and other states and limited role and powers of the Central Government.