Q. Which Satavahana ruler defeated the Shakas and conquered Malwa?
Answer: Gautamiputra Satakarni
Notes: Gautamiputra Satakarni was a Satavahana ruler who defeated the Shakas and expanded his kingdom into Malwa. Inscriptions describe him as the destroyer of Shakas, Yavanas, and Pahlavas. His reign marked the restoration of Satavahana authority in western and central India. The Malwa region was brought under his control through his military campaigns during the 2nd century CE.