<P> Chandragupta's state also started mines, centers to produce goods, and networks for trading these goods . His rule developed land routes for goods transportation within the Indian subcontinent, disfavoring water transport . Chandragupta expanded "roads suitable for carts", preferring these over those narrow tracts that allowed only pack animals . </P> <P> According to Kaushik Roy, the Maurya dynasty rulers, beginning with Chandragupta, were "great road builders". This was a tradition the Greek ambassador Megasthenes credited to Chandragupta with the completion of a thousand - mile - long highway connecting Chandragupta's capital Pataliputra in Bihar to Taxila in the northwest where he studied . The other major strategic road infrastructure credited to this tradition spread from Pataliputra in various directions: one connecting it to Nepal, Kapilavastu, Kalsi (now Dehradun), Sasaram (now Mirzapur), Kalinga (now Odisha), Andhra and Karnataka . This infrastructure not only boosted trade and commerce, states Roy, but also helped move his armies rapidly and more efficiently than ever before . </P> <P> Chandragupta and his counsel Chanakya seeded weapon manufacturing centers, and kept it a monopoly of the state . However, the state encouraged competing private parties to operate mines and supply these centers . They considered economic prosperity as essential to the pursuit of dharma (morality), adopting a policy of avoiding war with diplomacy, yet continuously preparing the army for war to defend its interests, and other ideas in the Arthashastra . </P> <P> The evidence of arts and architecture during Chandragupta's time is limited, predominantly texts such as those by Megasthenes and Kautilya's Arthashastra . The edict inscriptions and carvings on monumental pillars are attributed to his grandson Ashoka . The texts imply cities, public works and prosperous architecture, but the historicity of these is in question . </P>

Which group restored some of the mauryan high points of culture