When the February Revolution occurred in Petrograd in 1917, the governor of the Bessarabia Governorate stepped down and passed his legal powers to Constantin Mimi, the President of the Gubernial Zemstvo, which was named "the Commissar of the Provisional Government in Bessarabia", with Vladimir Criste his deputy. Similar procedures took place in all regions of the Russian Empire: the chiefs of the Tsarist administrations passed their legal powers to the chiefs of the County and Governorate Zemstvos, which were then called "County/Governorate Commissars".