Khanate of Khiva, 1917
After the Russian Revolution in 1917, a civil war broke out in the Khanate between pro- and anti-monarchists; opponents of the Khan and Turkmen tribesmen joined forces with the Bolsheviks at the end of 1919 to depose the Khan. On 2 February 1920 Khiva's last Khan, Sayid Abdullah, abdicated and the Khorezm People's Soviet Republic was declared by the First Khorezm Kurultay (Assembly) on 26 April 1920. During this civil war a flag consisting of a black field within broad green stripes and a yellow crescent and star in its centre, was flown.