başı or chief of sedentarization in Raqqa area. They were given taxing authority and controlling other tribes in the region. In 1758, Milli chief and iskan başı Mahmud bin Kalash entered Khabur valley, subjugated the local tribes and brought the area under control of Milli confederation and attempted to set up an independent principality. In 1800, the Ottoman government appointed the Milli chief Timur as governor of Raqqa (1800–1803). The Danish writer Carsten Niebuhr, who traveled to Jazira in 1764, recorded five nomadic Kurdish tribes (Dukurie, Kikie, Schechchanie, Mullie and Aschetie) and six Arab tribes (Tay, Kaab, Baggara, Geheish, Diabat and Sherabeh). According to Niebuhr, the Kurdish tribes were settled near Mardin in Turkey, and paid the governor of that city for the right of grazing their herds in the Syrian Jazira. These Kurdish tribes gradually settled in villages and cities and are still present in Jazira (modern Syria's Hasakah Governorate). In the mid 1800s, the Emirate of Bohtan of Bedir Khan Beg span over parts of present day northeastern Syria. The demographics of this area underwent a huge shift in the early part of the 20th century. Ottoman authorities with the cooperation of Kurdish troops (and to a lesser degree, Circassian and Chechen tribes) persecuted Armenian and Assyrian Christians in Upper Mesopotamia and were granted their victims' land as a reward. Kurds were responsible for most of the atrocities against Assyrians, and Kurdish expansion happened at the expense of Assyrians (due to factors like proximity). Kurdish as well as Circassian and Chechen tribes cooperated with the Ottoman (Turkish) authorities in the massacres of Armenian and Assyrian Christians in Upper Mesopotamia, between 1914 and 1920, with further attacks on unarmed fleeing civilians conducted by local Arab militias. In other parts of the country during this period, Kurds became local chiefs and tax farmers in Akkar (Lebanon) and the Qusayr highlands between Antioch and Latakia in northwestern Syria. The Afrin Plateau northwest of Aleppo, just inside what is today Syria, was officially known as the "Sancak of the Kurds" in Ottoman documents. The Millis revolted against the Ottoman government after the death of their leader Ibrahim Pasa and some of them eventually settled for the most part on the Syrian side of the newly drawn Turkish-Syrian border of 1922. When Maurice Abadie, a French general, was overseeing the French occupation of Syria, he made some observations on the settlements of Kurds