Виндхья
After annexing Seleucus' provinces west of the Indus river, Chandragupta had a vast empire extending across the northern Indian sub-continent from the Bay of Bengal to the Arabian Sea. Chandragupta began expanding his empire southwards beyond the Vindhya Range and into the Deccan Plateau. By the time his conquests were complete, Chandragupta's empire extended over most of the subcontinent.