Srimad Bhagavatam Canto 04, Chapter 16, Text 27

SB 4.16.27

diso vijityapratiruddha-cakrah
sva-tejasotpatita-loka-salyah
surasurendrair upagiyamana-
mahanubhavo bhavita patir bhuvah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
No one will be able to disobey the orders of Prthu Maharaja. After conquering the world, he will completely eradicate the threefold miseries of the citizens. Then he will be recognized all over the world. At that time both the suras and the asuras will undoubtedly glorify his magnanimous activities.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
At the time of Maharaja Prthu, the world was ruled by one emperor, although there were many subordinate states. Just as there are many united states in various parts of the world, in olden days the entire world was ruled through many states, but there was a supreme emperor who ruled over all subsidiary states. As soon as there were some discrepancies in the maintenance of the varnasrama system, the emperor would immediately take charge of the small states.
 
The word utpatita-loka-salyah indicates that Maharaja Prthu completely uprooted all the miseries of his citizens. The word salya means “piercing thorns.” There are many kinds of miserable thorns that pierce the citizens of a state, but all competent rulers, even up to the reign of Maharaja Yudhisthira, uprooted all the miserable conditions of the citizens. It is stated that during the reign of Maharaja Yudhisthira there did not even exist severe cold or scorching heat, nor did the citizens suffer from any kind of mental anxiety. This is the standard of good government. Such a peaceful and prosperous government, devoid of anxiety, was established by Prthu Maharaja. Thus the inhabitants of both saintly and demoniac planets were all engaged in glorifying the activities of Maharaja Prthu. Persons or nations anxious to spread their influence all over the world should consider this point. If one is able to eradicate completely the threefold miseries of the citizens, he should aspire to rule the world. One should not aspire to rule for any political or diplomatic consideration.
 
Thus end the Bhaktivedanta purports of the Fourth Canto, Sixteenth Chapter, of the Srimad-Bhagavatam, entitled “Praise of King Prthu by the Professional Reciters.”
Srimad Bhagavatam Canto 04, Chapter 16, Text 26
Srimad Bhagavatam Canto 04, Chapter 16 Overview