'Without the war, no Mahabharata, is true of this epic; but without the causes of the war, no war, is equally true....
We therefore naturally expect to find the preceding political conditions and the immediate causes of the war related in the earlier part of the epic and this is precisely what we do find.
Ancient India as we know, was a sort of continent, made up of many great & civilised nations who were united very much like the nations of modern Europe by an essential similarity of religion and culture rising above & beyond their marked racial peculiarities... Like the continent of Europe, the ancient continent of India was subject to two opposing forces, one centripetal which was continually causing attempts at universal empire, another centrifugal which was continually impelling the empires once formed to break up again into their constituent parts: but both these forces were much stronger in their action than they have usually been in Europe.
The Aryan nations may be divided into three distinct groups, the Eastern of whom the Coshalas, Magadhas, Chedies, Videhas & Haihayas were the chief; the Central among whom the Kurus, Panchalas & Bhojas were the most considerable; and the Western & Southern of whom there were many, small, & rude but yet warlike & famous peoples; among these there seem to have been none that ever became of the first importance.
Five distinct times had these great congeries of nations been welded into Empire, twice by the Ixvaacous under Mandhata son of Yuvanuswa and King Marutta, afterwards by the Haihaya Arjouna Cartoverya, again by the Ixvaacou Bhogiratha and finally by the Kuru Bharata. That the first Kuru empire was the latest is evident not only from the Kurus being the strongest nation of their time but from the significant fact that the Coshalas by this time had faded into utter & irretrievable insignificance.
The rule of the Haihayas had resulted in one of the great catastrophes of early Hindu civilization; belonging to the eastern section of the Continent which was always apt to break away from the strict letter of Aryanism, they had brought themselves by their pride & violence into collision with the Brahmins with the result of a civil war in which their Empire was broken for ever by Parshurama, son of Jamadagni, and the chivalry of India massacred and for the time broken.
The fall of the Haihayas left the Ixvaacous & the Bharata or Ilian dynasty of the Kurus the two chief powers of the continent. Then seems to have followed the golden age of the Ixvaacous under the beneficent empire of Bhogiratha & his descendants as far down at least as Rama. Afterwards the Coshalans, having reached their highest point, must have fallen into that state of senile decay, which once it overtakes a nation, is fatal & irremediable.
They were followed by the empire of the Bharatas. By the times of Santanou, Vichitravirya and Pandou this empire had long been dissolved by the centrifugal force of Aryan politics into its constituent parts, yet the Kurus were yet among the first of the nations and the Bharata Kings of the Kurus were still looked up to as the head of civilisation.
But by the time of Dhritarashtra the centripetal force had again asserted itself & the idea of another great empire loomed before the imaginations of all men; a number of nations had risen to the greatest military prestige & political force, the Panchalas under Drupada & his sons, the Bhojas under Bhishmuc & his brother Acrity who is described as equalling Parshurama in military skill & courage, the Chedies under the hero & great captain Shishupala, the Magadhas, built into a strong nation by Brihodruth; even distant Bengal under the Poundrian Vasudave and distant Sindhu under Vriddhakshatra and his son Jayadrath began to mean something in the reckoning of forces. The Yadava nations counted as a great military force in the balance of politics owing to their abundant heroism and genius, but seem to have lacked sufficient cohesion and unity to nurse independent hopes.