|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|Y|Z| Ua Buachalla, Domhnall (Donal Buckley) Uganda: Archontology Uganda: Governors-General: 1962-1963 Uganda: Heads of State: 1962-1963 Uganda: Heads of State: 1963-2022 Uganda: Polity Style: 1962-2022 Ukraine (Soviet Republic): Polity Style: 1917-1991 Ukraine: Archontology Ukraine: Chairmen of the Central Council: 1917-1918 Ukraine: Heads of State: 1918-1920 Ukraine: Heads of State: 1991-2022 Ukraine: Sources Ukrainian Soviet Socialist Republic: Archontology Ukrainian Soviet Socialist Republic: Heads of Provisional Government: 1918-1919 Ukrainian Soviet Socialist Republic: Heads of State: 1917-1918 Ukrainian Soviet Socialist Republic: Sources United Arab Emirates: Abu Dhabi: Archontology United Arab Emirates: Abu Dhabi: Heads of State: 1761-2022 United Arab Emirates: Abu Dhabi: Polity Style: 1761-2022 United Arab Emirates: Ajman: Archontology United Arab Emirates: Ajman: Heads of State: 1700-2022 United Arab Emirates: Ajman: Heads of State: 1700-2022 United Arab Emirates: Ajman: Polity Style: 1700-2022 United Arab Emirates: Archontology United Arab Emirates: Dubai: Archontology United Arab Emirates: Dubai: Heads of State: 1800-2022 United Arab Emirates: Dubai: Polity Style: 1800-2022 United Arab Emirates: Fujairah: Archontology United Arab Emirates: Fujairah: Heads of State: 1900-2022 United Arab Emirates: Fujairah: Polity Style: 1900-2022 United Arab Emirates: Glossary United Arab Emirates: Heads of State: 1971-2022 United Arab Emirates: Kalba: Archontology United Arab Emirates: Kalba: Heads of State: 1871-1952 United Arab Emirates: Kalba: Polity Style: 1871-1952 United Arab Emirates: Polity Style: 1971-2022 United Arab Emirates: Ras al-Khaimah: Archontology United Arab Emirates: Ras al-Khaimah: Polity Style: 1700-2022 United Arab Emirates: Sharjah: Archontology United Arab Emirates: Sharjah: Heads of State: 1800-2022 United Arab Emirates: Sharjah: Polity Style: 1800-2022 United Arab Emirates: Umm al-Quwain: Archontology United Arab Emirates: Umm al-Quwain: Heads of State: 1775-2022 United Arab Emirates: Umm al-Quwain: Polity Style: 1775-2022 United Arab Republic: Archontology United Arab Republic: Glossary United Arab Republic: Heads of State: 1958-1971 United Arab Republic: Polity Style: 1958-1961 United Indonesia: Archontology United Indonesia: Heads of State: 1960-1961 United Indonesia: Polity Style: 1960-1961 United Kingdom: Archontology United Kingdom: Heads of State: 1801-2022 United Kingdom: Polity Style: 1707-2022 United Kingdom: Prime Ministers: 1730-2022 United Kingdom: Prime Ministers: 1905-2022 United Kingdom: Principal Ministers: 1730-1905 United States of Indonesia: Archontology United States of Indonesia: Heads of State: 1949-1950 United States of Indonesia: Polity Style: 1949-1950 United States: Archontology United States: Heads of State: 1789-2022 United States: Notes United States: Polity Style: 1781-2022 United States: Presidents of Congress: 1774-1789 United States: Sources Uruguay: Archontology Uruguay: Governors: 1814-1817 Uruguay: Heads of State: 1825-1830 Uruguay: Heads of State: 1830-1919 Uruguay: Heads of State: 1952-2022 Uruguay: Polity Style: 1814-2022 Uruguay: Presidents of the National Council of Administration: 1919-1933 Uruguay: Presidents of the Republic: 1919-1952 Uruguay: Sources USSR: Communist Party Leadership: 1917-1991 USSR: Communist Party: 1917-1952 (Politburo) USSR: Communist Party: 1919-1952 (Orgburo) USSR: Communist Party: 1919-1991 (Secretariat) USSR: Communist Party: 1922-1991 (Leadership history) USSR: Communist Party: 1952-1966 (Presidium) USSR: Communist Party: 1966-1991 (Politburo) USSR: Communist Party: Congresses USSR: Communist Party: Orgburo USSR: Communist Party: Politburo USSR: Communist Party: Presidium USSR: Communist Party: Secretariat USSR: Communist Party: transitional period: 1917-1919 USSR: Heads of Government: 1923-1991 USSR: Party Congresses: 1898-1990 Uzbekistan (Soviet Republic): Archontology Uzbekistan (Soviet Republic): Chairman of the Central Executive Committee: 1925-1938 Uzbekistan (Soviet Republic): Chairmen of the Presidium of the Supreme Council: 1938-1990 Uzbekistan (Soviet Republic): President of the Republic: 1990-1991 Uzbekistan (Soviet Republic): Sources Uzbekistan: Archontology Uzbekistan: Heads of State: 1991-2022 Uzbekistan: Polity Style: 1924-2022 Uzbekistan: Polity Style: 1991-2022 Uzbekistan: Sources |A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|Y|Z| Last updated on: 27 Sep 2021 04:00:00
