500–300 BCE) I.8-9 and 12-13 locates the Āryāvarta to the east of the disappearance of the Sarasvati River in the desert, to the west of the Kālakavana, to the north of the Pariyatra Mountains and the Vindhya Range and to the south of the Himalayas.
[7][8] The Manava Dharmasastra (ca.150-250 CE) gives aryavarta as stretching from the eastern to the western seas, reflecting the growing sphere of influence of the Brahmanical ideology.
[9][10] With the growth of cities, which threatened the income and patronage of the rural Brahmins; the rise of Buddhism; and the Indian campaign of Alexander the Great (327-325 BCE), the rise of the Maurya Empire (322-185 BCE), and the Saka invasions and rule of northwestern India (2nd c. BC - 4th c. CE), Brahmanism faced a grave threat to its existence.
[15] Madhyadesa extended from the upper reaches of the Ganges and the Yamuna to the confluence of the two rivers at Prayaga, and was the region where, during the time of the Mahajanapadas, the Kuru Kingdom and Pañcāla existed.
The entire region is considered sacred in the Hindu mythology as gods and heroes mentioned in the two epics, the Ramayana and Mahabharata, lived here.