47 selected
- Not filled in
- Aceh - Sultanate (1496-1903)
- Afghanistan - Afghaanse states (till 1823)
- Afghanistan - Communist State (1973-1992)
- Afghanistan - Emirate (1823-1926)
- Afghanistan - Islamic republic Afghanistan (1992-present)
- Afghanistan - Kingdom (1926-1973)
- Ajman - Emirate (1969-1970)
- Al-Ghurfa - Yemeni state (1926)
- Albania - Kingdom (1928-1939)
- Albania - People's republic (1961-1992)
- Albania - Republic (1925-1928)
- Albania - Republic (1991-present)
- Albania - Socialist People's Republic (1976-1990)
- Albanië - Italian territory (1939-1944)
- Alderney - British Crown Dependency (1204-present)
- Algeria - French colony (1830-1962)
- Algeria - Republic (1964-present)
- Ancient Greece - Cappadocia as Independent Kingdom under Roman Influence (188 B.C.-17 A.D.)
- Ancient Greece - Classical Period (480–323 B.C.)
- Ancient Greece - Hellenistic Period (323-146 B.C.)
- Ancient Greece - Illyria as Roman Protectorate (167-35 B.C.)
- Ancient Greece - Thrace as Part of the Roman Province Macedonia (146 B.C.-379 A.D.)
- Ancient Greece after 146 BC.
- Ancient Greece before 146 B.C.
- Andorra - Kingdom (1983-present)
- Angola - Portuguese colony (1575-1974)
- Angola - Republic (1975-present)
- Anguilla - autonomous area within the United Kingdom (1967-present)
- Annam - French protectorate (1885-1945)
- Antigua and Barbuda - British Administration (1967-1981)
- Antigua and Barbuda - Constitutional Monarchy (1981-present)
- Antwerpen – French siege (1814-1815)
- Argentina - counties for 1881
- Argentina - Republic (1881-present)
- Armenia - Republic (1991-present)
- Aruba - Dutch State - "Status Aparte" (1986-present)
- Ascension Island - British Administration (1978-present)
- Australia - British kolony (1788-1901)
- Australia - Commonwealth (1901-present)
- Austria - Archduchy (1453-1804)
- Austria - Austro-Hungarian Empire (1867-1918)
- Austria - Duchy (1156-1453)
- Austria - Empire (1804-1867)
- Austria - Republic (1919-present)
- Azerbaijan - Republic (1992-present)
- Azoren - Colony of Portugal (1583-1976)
- Azores - Autonomous province of Portugal (1976-present)