Explanation:

The Braj language, Braj Bhasha, also known as Brij, is a Western Hindi language. Along with Awadhi (a variety of Eastern Hindi), it was one of the two predominant literary languages of North-Central India before the switch to literary Hindustani in the 19th century. Braj is spoken by people in the nebulously defined region of Vraja Bhoomi, which was a political state in the era of the Mahabharata wars. According to ancient Hindu texts such as the Bhagavata Purana, the Kingdom of Surasena is described as spreading through the Brij (also known as Vrija or Vraja), where the incarnation of Vishnu, Krishna was born and spent his childhood days.