5
The war of Mahabharata was being fought only for the ambition of Maharaja Dhritarashtra. Any king himself sends his commander before entering the war, this is what happened and Ashvasena was sent to the war.

Hearing this, Ashvasen flew towards Arjun with the intention of completing his revenge, Shri Krishna warned Arjun and ordered him to take his life.

If Arjun was not absolved of the sin of burning the Khandava forest, that stigma passed on to his grandson Parikshit. It is said that Parikshit was bitten by Takshak snake himself. Takshak snake bit because it was the desire of Shri Krishna behind it. The reason why Shri Krishna saved Arjun and Arjun's family from Brahmastra and Nagastra had already been fulfilled, hence it was Shri Krishna's wish that Takshak should complete his revenge.

4
Of these, Kaliya Naag was favored by Shri Krishna himself in his childhood and taken into his service, hence Shri Krishna was also the master of Kaliya. And Shankhapala protects the treasures of Mahalakshmi and Kuber. Dhritarashtra survived, Takshak and Kaliya survived, Takshak and Dhritarashtra, Takshak had personal enmity with Arjun, his family and kingdom were burnt by Arjun in Khandava forest, but one, Shri Krishna himself was riding on Arjun's chariot, Arjun had the support and blessings of Shri Krishna. Secondly, Arjun was the son of Devraj Indra and was a friend of Takshak Devraj, so on this occasion he did not consider it appropriate to go himself, had he gone, Shri Krishna would have killed him. So he sent Ashvasena, another serpent of his clan, who was looking for a chance to take revenge from Arjun.

If Takshak had not left his clan then Dhritarashtra himself would have had to descend, but Mahanag Dhritarashtra was born in Kurukula as Maharaj Dhritarashtra.

3
Among these nine serpents, the first four are divine serpents, that is, they are employed in the service of Vishnu and Shiva. Anant and Shesh Naag are incarnations of Lord Vishnu and are in his service. Kambal Naag is around the waist of Lord Ganesha while Vasuki Naag is around the neck of Lord Shiva.

The picture shows two bloodlines:
Adamite (35) right side/hemisphere affects the left side of the body and is focused on feelings, empathy.
Cain's lineage (30 black rock) left side/hemisphere affects the right side of the body and is focused on matter and possessiveness, the "666" symbol on the hand indicates an intention to defile Adam's bloodline

2
The entire family was killed. In fact, the entire clan of serpents is the same, hence anyone among all the serpents could have taken revenge from Arjun, but there is a big reason behind only Ashvasena reaching Kurukshetra.

Read and understand this hymn from Mahabharata 👇
Infinity, Vasuki, Shesha, Padmanabha and Kamvala
Shankhapala, Dhritarashtrakanch, Takshaka and Kaliya
These are the nine names of the serpents by the great soul
Read in the evening, especially in the morning.
He has no fear of poison and can win everywhere.

Ananta Vasuki Shesha Padmanabha and Kambala Nag and Shankhapala, Dhritarashtra Takshaka and Kalia.
These nine serpents are so important that reciting these names especially in the morning and evening does not cause fear of poison and the reciter attains victory everywhere.