which province of pakistan did not have any constitution during british rule
Princely state During the period of the British Raj, there were four princely states in Balochistan: Makran, Kharan, Las Bela and Kalat. The first three acceded to Pakistan.[51][52][53][54] However, the ruler of the fourth princely state, the Khan of Kalat Ahmad Yar Khan, declared Kalat's independence as this was one of the options given to all princely states.[55] The state remained independent until it was acceded on 27 March 1948. The signing of the Instrument of Accession by Ahmad Yar Khan, led his brother, Prince Abdul Karim, to revolt against his brother's decision in July 1948, causing an ongoing and still unresolved insurgency.[56]