Khorezm People's Soviet Republic
The Khorezm People's Soviet Republic was the state created as the successor to the Khanate of Khiva in February 1920, when the Khan abdicated in response to pressure. It was officially declared by the First Khorezm Kurultay (Assembly) on 26 April 1920.
Source: Wikipedia — Khorezm People's Soviet Republic (CC BY-SA 4.0)