King Harshavardhana ascended the throne of Thaneshwar and Kannauj on the death of his brother, ________.

Rajyavardhana

The correct answer is Option 4- Rajyavardhana

Harshavardhana ascended the throne of Thaneshwar and Kannauj on the death of his brother, Rajyavardhana. Rajyavardhana was the eldest son of Prabhakar Vardhana, the founder of the Vardhana dynasty. He was killed by Shashanka, the king of Gauda, in 606 CE.

Harshavardhana ruled over a vast empire that included much of northern India. He was a patron of the arts and literature and is considered one of the greatest rulers of ancient India.