It is estimated that at the beginning of the 20th century around 12,000 Kurds lived in Damascus; an unknown number of Kurds lived in the Kurd-Dagh region; 16,000 Kurds lived in the Jarabulus region; and an unknown number lived in the Jazira province, where they were likely the majority. The extension of the railway and road to Nusaybin in 1918 intensified the immigration of Kurds southwards into the Syrian foothills and plains along rivers. In the 1920s after the failed Kurdish rebellions in Kemalist Turkey, there was a large migration of Kurds to Syria's Jazira province. It is estimated that 25,000 Kurds fled at this time to Syria. The French official reports show the existence of 45 Kurdish villages in Jazira prior to 1927. A new wave of refugees arrived in 1929. The French authorities continued to allow Kurdish migration into the Mandate, and by 1939, the villages numbered between 700 and 800. The French geographers Fevret and Gibert, who estimated that in 1953 out of the total 146,000 inhabitants of Jazira, agriculturalist Kurds made up 60,000 (41%), nomad Arabs 50,000 (34%), and a quarter of the population were Christians.