Who was the greatest Chola king of the ancient period?

Rajendra I was a Chola emperor who is considered one of the greatest rulers and military generals of India. He succeeded his father Rajaraja Chola I in 1014 CE. During his reign, he extended the influence of the Chola empire to the banks of the river Ganga in North India and across the Indian ocean to the West, making the Chola Empire as one of the most powerful empires of India.