Explanation: Rudradaman I (c.130 CE–152 CE): The most famous of all the Shaka kshtarapa rulers, who ruled in the middle of second century CE.

• His empire was spread over almost whole of western India which included Sindh, Gujarat, Konkan, Narmada Valley, Malwa and Kathiawar except the Nashik and Pune areas.
• He is famous in history because of the repairs he undertook to improve the Sudarshan Lake from Chandragupta Maurya’s reign, located in the semi-arid zone of Kathiawar, and this task is described in the famous Junagarh or Girnar Inscription (dated in the Shaka year 72, i.e., 150– 151 CE).

Source: Tamil Nadu NCERT