and each one was supposed to cover 5,536 homesteads. In 1719, Peter enacted another administrative reform to fix the deficiencies of the original system, as the governorates were too big and unmanageable. This reform abolished the system of lots, dividing most of the governorates into provinces (), which were further divided into districts (). During this time, territories were frequently reshuffled between the governorates, and new governorates were added to accommodate population growth and territorial expansion. in 1721 the Russian Empire possessed a multinational population of about 17.5 million population in all administrative districts. Out of the 13.5 million Russians, 5.5 million men were liable to the poll tax; 3 percent of them were townsmen and 97 percent peasants. Of the peasants, 25 percent cultivated church lands, 19 percent state lands, and the remainder worked the estates of some 100,000 families of secular landowners. Russia’s territory of about 4,633,200 square miles (12,000,000 square km) included some recent and valuable acquisitions. Subsequent reforms In 1727, soon after Peter the Great's death, Catherine I enacted another reform, which rolled back many of the previous reform's developments. The system of districts was abolished, and the old system of uyezds was restored. A total of 166 uyezds was re-established; together with the newly created uyezds, the Russian Empire had approximately 250. The reform also reshuffled some territories. Narva Province was transferred from Saint Petersburg Governorate to Revel Governorate; Solikamsk and Vyatka Provinces were transferred from Siberia Governorate to Kazan Governorate; and Uglich and Yaroslavl Provinces were transferred from Saint Petersburg Governorate to Moscow Governorate. In addition, Belgorod, Oryol, and Sevsk Provinces of Kiev Governorate were reconstituted as Belgorod Governorate; and Belozersk, Novgorod, Pskov, Tver, and Velikiye Luki Provinces of Saint Petersburg Governorate were reconstituted as Novgorod Governorate. The following years saw few changes. In 1728, Ufa Province was transferred from Kazan Governorate to Siberia Governorate, and in 1737, Simbirsk Province was created within Kazan Governorate. Administrative reforms by Catherine the Great By 1775, the existing system of administrative divisions proved inefficient, which was further underlined by Pugachev's Rebellion, and Catherine the Great issued a document known as Decree on the Governorates (). The second part of the same decree was issued in 1780, which, however, contained very few significant changes with respect to the first part. A major administrative territorial restructuring of the Russian Empire after vast land acquisition from the Ottoman Empire and