The historically-important Christian city of Nusaybin had a similar fate after its Christian population left when it was annexed to Turkey. The Christian population of the city crossed the border into Syria and settled in Qamishli, which was separated by the railway (new border) from Nusaybin. Nusaybin became Kurdish and Qamishli became an Assyrian city. Things soon changed, however, with the immigration of Kurds beginning in 1926 following the failure of the rebellion of Saeed Ali Naqshbandi against the Turkish authorities. Djezirah is one of the four dioceses of the Syriac Orthodox Church. The others are in Aleppo, Homs–Hama and Damascus. The area has experienced a high rate of emigration in the past 40 years. Prime factors have been drought and the emigration of Assyrian Christians due to economic hardship and conflict with Kurds.