sentences:  Metallurgy was the most advanced and the only distinct craft speciality among the Scythians.From the story of Polyaenus and Frontin, it follows that in the 4th century BC Scythia had a layer of dependent population, which consisted of impoverished Scythian nomads and local indigenous agricultural tribes, socially deprived, dependent and exploited, who did not participate in the wars, but were engaged in servile agriculture and cattle husbandry.The year 339 BC proved a culminating year for the Second Scythian Kingdom, and the beginning of its decline.