great convergence of the Ottomans due to their presence and role in the Ottoman Empire's establishment and evolution and its rise as a powerful state, notwithstanding the divergent nature of their life. Therefore, the nomadic and semi-nomadic Turkomans of Anatolia, followers of popular Sufism led by the Sufi dervishes, had agreeable relations with the first Ottoman sultans. Gradually, historical developments changed this trend. The Ottomans conquered Constantinople in the second half of the ninth century AH and moved their capital to it. Following this conquest, the Ottoman bureaucracy underwent a new stage of evolution and development. Moreover, the Ottomans' policies towards the Turkomans, the Ottoman state's former founders, changed radically. This was while a large population of Turkomans emphasized the nomadic ways and traditions of life. According to this study, Ottoman bureaucracy's development in the post-conquest period of Istanbul, headed by the three institutions of Timar, Devshirme, and School, presented a crucial role in isolating the Turkomans. Besides, Ottoman centralism policy in the face of the nomadic and semi-nomadic Turkomans and the humiliation of these groups by the Ottoman society's elites reinforced the Sufi Turkmens' divergence from the Ottomans and caused their convergence of the Safavids.