Some of them are quite large and were Empires, some small like the Chera Kingdom in Tamil Nadu.
It is interesting to note that these small kingdoms were as prosperous if not more than the large kingdoms’ say in the period of Ramayana,Mahabharata.
The Tamil Chera King, Perunchotru Udiyan Cheralathan fed both the armies of the Epic battle of Mahabharata.
For more details on this read my post on this,
He used to liaise with both the warring groups, such was the respect he commanded and so was his states prosperity.
Even During Ramayana period the prosperity of the smaller states were in evidence.
What i have gleaned from these and other historical facts, in India, Austrian Empire, i that a State is prosperous if the Government is good and there are development activities.
The academic discussion that large Sates have more resources at their disposal, smaller easy to administer …are mere arm-chair discussions.
i was curious to find how ancient Map of India looked like.
Here are some Maps of ancient India from the Ramayana, Mahabharata days.
India during The Ramayana period.
English: Author: JIJITH NR This image shows the locations places mentioned in Mahabharata and Ramayana. Some of the places retained their name during the period of Buddha and some even to the current times. Legend: yellow: kingdoms; blue: rivers; green: forests; brown: mountains; red: places (cities, towns, villages, mountain peaks, etc.)