During the ancient period, around 230 BC, Maharashtra came under the rule of the Satavahana dynasty which ruled the region for 400 years. The greatest ruler of the Satavahana Dynasty was Gautami putra Satakarni. The Vakataka dynasty ruled Maharashtra from the 3rd century to the 5th century. The Chalukya dynasty ruled Maharashtra from the 6th century to the 8th century. The two prominent rulers were Pulakeshin II, who defeated the north Indian Emperor Harsh, and Vikramaditya II, who defeated Arab invaders in the 8th century. The Rashtrakuta Dynasty ruled Maharashtra from the 8th to the 10th century. The Arab traveler Sulaiman called the ruler of the Rashtrakuta Dynasty (Amoghavarsha) 'one of the 4 great kings of the world'. From the early 11th century to the 12th century the Deccan Plateau was dominated by the Western Chalukya Empire and the Chola dynasty.