The development of Taraz as a city arose as the result of the development and strengthening of political and economic ties linked to trade along the Silk Road. As a major halt, it flourished amidst a comparatively gentle climate, fertile soil and rich pastures, which attracted many stockbreeders and farmers. The struggle between Persia and Byzantium for control of the route forced both sides to look for allies. Byzantium sent ambassadors to the Western Turk Khanate, and Zemarkha Kililyskyi arrived in Taraz in 568. Simultaneously the Persians sent their ambassador to the Turks, but Istemi Khan was on the side of Byzantium.