In 1921, the victorious Allies established the state of Iraq under British Mandate, its borders heavily influenced by Britain in line with the European nations' interests and ambitions.
They presented several reports and petitions to the British colonel in Mosul requesting that no Muslims are to be given the administrative posts in their districts and reaffirming they wanted a direct rule under Britain.
This plan was met with stern opposition against the Iraqi government from the Yazidis, in particular from one of their tribal leaders in Sinjar, Dawud al-Dawud.
[7] Despite still remaining marginalized in some aspects, situation of Yazidis had still improved since Ottoman rule, as they were able to enjoy some of their religious rights as ensured by the first Iraqi constitution of 1925.
This recognition would later be retracted under Ba'athist government who like the Ottomans, denied Yazidism as an independent religion, claiming its origins go back to Islam.
[7] In 1934, universal military conscription was enacted in Iraq and in the following year, the Iraqi government tried to impose this law on Yazidis.
[7] In 1941, Yazidis supported the pro-German movement led by Rashid Ali al-Gaylani against the pro-British authority in Iraq.
[7] Although Yazidis enjoyed some freedoms during the monarchical period such as managing their own religious affairs, they still participated in movements or revolutions aimed at changing the ruling power in Iraq, in hopes that it would improve their situation.
[7] The revolution enjoyed the support of the majority among Yazidis in Sinjar, who hung banners, held demonstrations and national celebrations in favour of the revelation.