The 50 flag images of the Hard level come from Wikimedia Commons. Each is used under the licence shown, and credited to the author named on its Commons page. Back to the quiz.
| Flag | File on Wikimedia Commons | Author | Licence |
|---|---|---|---|
| Bey of Tunis | Flag of the Bey of Tunis.svg | Germenfer | Public domain |
| Cape Verde | Flag of Cape Verde (1975–1992).svg | Editor at Large , Waldir | Public domain |
| Cook Islands | Flag of the Cook Islands (1973-1979).svg | not stated | Public domain |
| Durrani Empire | Flag of Herat until 1842.svg | Orange Tuesday ( talk ) | Public domain |
| Empire of China | Flag of the Empire of China (1915–1916).svg | Original: 中華帝國政府 Vector: Gunter Küchler | Public domain |
| Empire of Vietnam | Flag of the Empire of Vietnam (1945).svg | Great Brightstar | Public domain |
| First Empire of Haiti | Flag of the First Empire of Haiti.svg | Samhanin | CC BY-SA 3.0 |
| First Philippine Republic | Philippines Aguinaldo flag (obverse).svg | Emilio Aguinaldo | Public domain |
| German East Africa Company | Flagge DOAG1885.svg | Fornax | CC BY-SA 3.0 |
| Greater Republic of Central America | Flag of the Greater Republic of Central America (1898).svg | No machine-readable author provided. Fornax assumed (based on copyright claims). | Public domain |
| Hunza State | Flag of Hunza.svg | Ali Atif | Public domain |
| Hyderabad State | Asafia flag of Hyderabad State.svg | SajidA829 | CC BY-SA 4.0 |
| Kingdom of Artsakh | Royal Standard of the Principality of Khachen (1214-1261).svg | Germenfer | CC0 |
| Kingdom of Fiji | Flag of the Kingdom of Fiji (1871-1874).svg | not stated | Public domain |
| Kingdom of Haiti | Flag of Haiti (1814–1820).svg | Samhanin | CC0 |
| Kingdom of Kandy | King of Kandy.svg | Janith ( talk ) 03:45, 16 August 2008 (UTC) Original uploader was Uvants2 at en.wikipedia | Public domain |
| Kingdom of Kongo | Flag of the Kingdom of Kongo according to Giovanni Cavazzi da Montecuccolo.svg | Oren neu dag | Public domain |
| Kingdom of Morgannwg | Glamorgan Flag.svg | User:Hogweard | Public domain |
| Kingdom of Tahiti | Flag of the Kingdom of Tahiti.svg | Vilallonga | Public domain |
| Manipur State | Flag of Manipur.svg | User:Hosmich | CC0 |
| Netherlands Antilles | Flag of the Netherlands Antilles (1986–2010).svg | not stated | Public domain |
| Penza Oblast | Flag of Penza Oblast.png | Unknown author Unknown author | Public domain |
| People's Republic of Benin | Flag of Benin (1975–1990).svg | not stated | Public domain |
| People's Republic of the Congo | Flag of the People's Republic of the Congo.svg | Thommy | Public domain |
| Peru–Bolivian Confederation | Flag of the Peru-Bolivian Confederation.svg | No machine-readable author provided. Huhsunqu assumed (based on copyright claims). | CC BY-SA 2.5 |
| Principality of Antioch | Banner of the Principality of Antioch.png | Dragovit | CC BY-SA 4.0 |
| Qu'aiti Sultanate | Flag of the Qu'aiti Sultanate (1939-1967).svg | ArnoldPlaton and 痛 Designism | CC BY-SA 3.0 |
| Rapa Nui | Easter Island flag 1876 to 1888.svg | Centralismo | CC0 |
| Regency of Algiers | Flag of Regency of Algiers.svg | Nourerrahmane | Public domain |
| Republic of Acre | Bandeira do Estado Independente do Acre.svg | User:Giro720 | Public domain |
| Republic of Afghanistan | Flag of Afghanistan (1974–1978).svg | Orange Tuesday ( talk ) at en.wikipedia. | Public domain |
| Republic of Ararat | Kurdish flag (Khoiboun).svg | Benohight214 | CC BY-SA 4.0 |
| Republic of Bolívar | State flag of Bolivia (1825-1826).svg | Huhsunqu | CC BY-SA 2.5 |
| Republic of Ciskei | Flag of Ciskei.svg | Madden | Public domain |
| Republic of East Florida | East Florida Patriot Flag.svg | ArnoldPlaton | CC BY-SA 3.0 |
| Republic of Georgia | Flag of Georgia (1990–2004).svg | Jon Harald Søby | Public domain |
| Republic of Maryland | Flag of the Republic of Maryland.svg | Government of the Republic of Maryland / Liberia . Image digitized by Jaume Ollé. | Public domain |
| Republic of Quito | Flag of Quito Revolution (1809–1812).svg | EuropeanV | CC0 |
| Republic of Seychelles | Flag of Seychelles (1977–1996).svg | not stated | Public domain |
| Republic of the Rif | Flag of the Republic of the Rif.svg | Mysid | Public domain |
| Republic of Vercors | Flag of Free Republic of Vercors.svg | Original: Unknown Vector: Froztbyte | Public domain |
| Republic of Yucatán | Flag of the Republic of Yucatan.svg | Heraldry | Public domain |
| Seljuk Empire | Flag of Seljuk Empire (16 Great Turkic Empires) 2.svg | Tarataraq | Public domain |
| South Peru | Flag of South Peru.svg | not stated | CC BY-SA 2.5 |
| State of Aleppo | Flag of the State of Aleppo.svg | Thommy | Public domain |
| State of Muskogee | State of Muskogee (Florida, 1799-1803).svg | William Augustus Bowles in 1799 [2] | Public domain |
| State of Somaliland | Flag of State of Somaliland.svg | Siirski | CC BY-SA 4.0 |
| Sultanate of Cirebon | COLLECTIE TROPENMUSEUM Katoenen banier met Arabische kalligrafie TMnr 5663-1.svg | Tropenmuseum | CC BY-SA 3.0 |
| Sultanate of Tidore | Flag of the Sultanate of Tidore.png | Fazoffic | Public domain |
| Vermont Republic | Flag of the Vermont Republic.svg | Mysid at en.wikipedia , revised version first uploaded by Lexicon . | Public domain |
