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In page Peshawar:

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Following the Seleucid–Mauryan war, the region was ceded to the Mauryan Empire in 303 BCE.[citation needed] Around 300 BCE, the Greek diplomat and historian Megasthenes noted that Purushapura was the western terminus of a Mauryan road that connected the city to the empire's capital at Pataliputra, near the city of Patna in the modern-day Indian state of Bihar.[2][3]