sutau svayambhuvasya vai
priyavrata—Maharaja Priyavrata; uttanapadau—and Maharaja Uttanapada; sutau—the two sons; svayambhuvasya—of Svayambhuva Manu; vai—indeed; yatha—according to; dharmam—religious principles; jugupatuh—ruled; sapta-dvipa-vatim—consisting of seven islands; mahim—the world.
The two great sons of Svayambhuva Manu—Priyavrata and Uttanapada—ruled the world, consisting of seven islands, just according to religious principles.
Srimad-Bhagavatam is also a history of the great rulers of different parts of the universe. In this verse the names of Priyavrata and Uttanapada, sons of Svayambhuva, are mentioned. They ruled this earth, which is divided into seven islands. These seven islands are still current, as Asia, Europe, Africa, America, Australia and the North and South Poles. There is no chronological history of all the Indian kings in Srimad-Bhagavatam, but the deeds of the most important kings, such as Priyavrata and Uttanapada, and many others, like Lord Ramacandra and Maharaja Yudhisthira, are recorded because the activities of such pious kings are worth hearing; people may benefit by studying their histories.
Link to this page: https://prabhupadabooks.com/sb/3/21/2