context: Although the period of this historical kingdom dates from the fourth to twelfth centuries, it is frequently mentioned. Ancient and medieval historians refer to this as Kamrup. After the expiration of the kingdom of Kamrup, it is mentioned in the Muslim texts called Kamru or Kamrud. According to Kalika Purana and Suanchang, there was the Karatoya river on the western boundary of the state and Darkarbasi temple near Sadia in the east. [1] The Burman dynasty, the Mleccha dynasty and the Pala dynasty ruled till the twelfth century, after which the Khen dynasty moved the capital further west and renamed the kingdom Kamta. So the existence of the kingdom of Kamrup ended with the fall of the Pala kings in the twelfth century.
question: What is the time limit of Kamrup state?