 Quote: "Numerous passageways through the western frontiers of the Indian subcontinent in modern Pakistan and Afghanistan served as migration routes to South Asia from the Iranian plateau and the Central Asian steppes.
<meaning-changed>  Quote: "Numerous passageways through the western frontiers of the Indian subcontinent in modern Pakistan and Afghanistan served as migration routes to South Asia from the Iranian plateau and the Central Asian steppes.
 Quote: "Numerous passageways through the northwestern frontiers of the Indian subcontinent in modern Pakistan and Afghanistan served as migration routes to South Asia from the Iranian plateau and the Central Asian steppes.