Why "Kurukshetra" was chosen as a battle field for the war of Mahabharata ?

Kurukshetra is located in Haryana, state of India.

Shrikrishna & Arjuna in the battle field of Kurukshetra

 It is written in Puranas that Kurukshetra is named after King Kuru of the Bharata Dynasty, ancestor of Pandavas and Kauravas.

The Vamana Purana tells how King Kuru came to settle on this land. He chose this land at the banks of Sarasvati River(since dried up before 1900BCE) for embedding spirituality with 8 virtues: austerity (tapas), truth (satya), forgiveness (kshama), kindness (daya), purity (suchee[disambiguation needed]), charity (daan), yagya and brahmacharya. Lord Vishnu was impressed with the act of King Kuru and blessed him. God gave him two boons, one that this land forever will be known as a Holy Land after his name as Kurukshetra (the land of Kuru) and the other that anyone dying on this land will be going to heaven.

Kurukshetra was also known as "Dharmakshetra" (the "field of Dharma"), or field of righteousness. Mahābhārata tells that this site was chosen for the war because a sin committed on this land was forgiven on account of the sanctity of this land.