The year of Taraz's foundation is generally accepted as 568 A.D., the date of the first written record according to the Greek sources. At that time the Great Silk Road ran across Southern Kazakhstan. It played a major role in trade and cultural exchange between China, India, Byzantium, and Persia. Taraz developed as a fortified tradecraft city on this massive transcontinental artery. Comparatively gentle climate, fertile soil and rich pastures attracted many stock-breeder and farmers. In the 60-s of the 6th century the territory of the First Turkic Kaganate section included Taraz. The Sogdian merchants, who controlled the Central Asian section of the caravan route, were interested in easier access to Byzantium, and initiated trade negotiations first with the Persians, and then with Byzantium. In response, Byzantium sent ambassadors to the Turkic Kaganate, and in the 568 the embassy led by Zemarchus and Maniach to the Muhan Khan arrived in Taraz at the court of Istemi Yabgu. The Persian ambassador also appeared at the court of the Turkic Kagan at the same time, but Istemi Yabgu allied with Byzantium.