Five thousand years ago a unique, transcendental event occurred on this earth and that event was the birth of Shri Krishna in India.
Shri Krishna is at the top among those who dedicated their lives to a purpose. He assumed the human form and was born on this earth to demonstrate how the life should be led in sorrows, sufferings and happiness. The Shri Krishna was the apostle of perfection, perfect to core. The life of Shri Krishna was so glorious, noble and yet selfless that one can hardly find a parallel of it in the history. Shri Krishna is described as the outstanding personality of the earth. He possesses all the characteristics of such epoch making personality. As he is complete in every aspect, he is known as 'Purna Purushotam '
Yadavas belong to Yadukul. According to Panini the great grammarian, there were two groups of Yadavas, who had republic form of government. The Andhank group was ruling in the area around Mathura. Ugrasen (grand father of Shree Krishna) was the president of the republic. The word 'king' was used with reference to Ugrasen, though Andhank was a republican form of Government. (It is to be taken for the president of a republic.)
In the same manner the other republic of the Yadavas was Vrushini republic. The contemporary leader of this republic was Akrurji. Vasudevajee belonged to Vrushini group of Yadavas. Shri Krishna was born to Devaki and Vasudevajee. Both republics had a great deal to fear from aggressive imperialism of Jarasangha, whose power was spreading very fast. Jarasangha, the king of Magadh, had an ambition of bringing as many territories under his unitary rule. This was a great danger to the republican form of government.
At last Jarasangha had realized that mere aggression would not help him since every citizen of the republic was a soldier and would fight to the last drop of his blood and would not hesitate to sacrifice his life for the protection of his motherland. Hence, he decided to divide and rule.
Jarasangha, in order to create a split amongst the Yadavas, gave his two daughters Asti and Prapti in marriage to Kansa, the son of Ugrasen, who was the president of one of the two republics. Kansa was known to be inclined towards the imperial form of Government. The prestige of Kansa increased after this alliance. The entire kingdom of Magadh was at his back and call now.
In the republic, Kansa had no special privileges, nor was he an heir apparent. Jarasangha instigated his son-in-low, Kansa. With the support of Jarasangha, Kansa became ambitious and craved for power. He began to dream of achieving unitary power, all concentrated in himself. He began initiating efforts to destroy the republic and to establish his own dominion. Thus Jarasangha, intelligent as he was, fully utilized Kansa to create destruction amongst Yadavas’ republics.
Kansa in order to establish his autocratic rule began his attempts to terrorize the citizens. He arrested Ugrasen, his father and took over the reigns of power in his hand. Kansa used to threaten repeatedly the powerful section of the people saying,' If you do not fall in line with me, I will invite aggression by my father-in- law Jarasangha.'
Thus, Kansa imposed himself as a king.
Accordingly, in Dwapara Yuga (the third of four ages according to Hindu mythology) when the rulers became inhuman, acted like demons, Shri Krishna incarnated in the North Indian city called Mathura to destroy them. Even the greatest of great Rishis (illumined sages) and deities are unable to describe Shri Krishna's Lila (the exploits, acts and plays of Krishna in an incarnation).
Though Krishna incarnated at Vasudeva's place, he however, went to Gokul at Nandbaba's place to make cowherds' children happy. Having seen the Lila of Shri Krishna, they turned blessed. Right from childhood he started destroying demons. On the very sixth day of his birth he killed the female demon Putna . He also killed many mightiest demons viz. Trunavarta, Keshi, Aristhasur, Bakasur, Pralambasur etc. in his childhood. During the same period he also killed Kali Nag (the cobra de capello) and made holy water of river Yamuna, poison free. He made cowherds' wives happy by the bliss of his Cosmic Dances.
Having completed Lila at Gokul, he returned to Mathura and killed his wicked maternal uncle King Kansa with all his cruel associates and liberated his parents from jail. He reinstated Ugrasen as the King of Mathura. On the very easy triumph over multimillion army of Jarasangh, all deities from heaven started showering flowers and praised Shri Krishna. He also shifted all his sleeping relatives and natives of Pur to Dwarika by the power of Yoga.
After the famous war of Mahabharat, he advised Udhava about Self-knowledge . During his last days, Krishna arranged for a mass destruction of all wicked Yadavas of Yaduvansha. Then, Maha Yogi Shri Krishna departed.