{
  "status": "research-in-progress",
  "reviewedOn": "2026-10-16",
  "sources": [
    {
      "title": "Peace of Nystad · ratification imprimée de 1721",
      "author": "Saint Petersburg Institute of History · Russian Academy of Sciences",
      "url": "https://spbiiran.ru/en/300th-anniversary-of-the-peace-of-nystad-virtual-exhibition-of-one-document/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "The monuments at Jelling · inscriptions et royautés",
      "author": "National Museum of Denmark",
      "url": "https://en.natmus.dk/historical-knowledge/denmark/prehistoric-period-until-1050-ad/the-viking-age/the-monuments-at-jelling/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "New research on the Jelling Stone · Thyra et les structures du pouvoir",
      "author": "National Museum of Denmark · recherche de 2023",
      "url": "https://en.natmus.dk/news/new-research-from-the-national-museum-of-denmark-reveals-who-carved-the-jelling-stone/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Jellingstenen · grande pierre vers 965",
      "author": "National Museum of Denmark",
      "url": "https://natmus.dk/historisk-viden/danmark/oldtid-indtil-aar-1050/vikingetiden-800-1050/monumenterne-i-jelling/jellingstenen/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Norges regenter · datation traditionnelle de Hafrsfjord et unions",
      "author": "Royal House of Norway",
      "url": "https://www.kongehuset.no/historie/kongerekken",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Milestones in Norway’s democratic history · 1814 et 1905",
      "author": "Stortinget",
      "url": "https://www.stortinget.no/en/In-English/About-the-Storting/historical-highlights/milestones-in-norways-democratic-history/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "History of Sweden · formations royales, unions et transformations",
      "author": "Swedish Institute · site officiel, texte indexé",
      "url": "https://sweden.se/culture/history/history-of-sweden",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Stormaktstiden · cadre de périodisation 1611–1718",
      "author": "Nationalencyklopedin",
      "url": "https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/stormaktstiden",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Kalmarunionen 1397–1523 · union personnelle et interruptions",
      "author": "Danmarkshistorien · Lex, recherche historique universitaire",
      "url": "https://danmarkshistorien.lex.dk/Kalmarunionen%2C_1397-1523",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Unionsbrevet 1397 · texte et contexte documentaire",
      "author": "Danmarkshistorien · Lex",
      "url": "https://danmarkshistorien.lex.dk/Unionsbrevet_1397_om_regeringsud%C3%B8velsen_i_Kalmarunionen",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Cnut · règne anglais de 1016–1035",
      "author": "Royal Household",
      "url": "https://www.royal.uk/canute-great-r-1016-1035",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Knud den Store · Danemark en 1018 et Norvège en 1028",
      "author": "National Museum of Denmark",
      "url": "https://natmus.dk/historisk-viden/temaer/kongeraekken/knud-1-den-store/?force=desktop",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Þingvellir · histoire de l’assemblée et du Commonwealth",
      "author": "Þingvellir National Park",
      "url": "https://www.thingvellir.is/en/education/history/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Saga · terme de la phase autonome en 1262–1264",
      "author": "Þingvellir National Park · texte islandais",
      "url": "https://www.thingvellir.is/fraedsla/saga/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Lögrétta · institutions, transformations et dernier site d’assemblée",
      "author": "Þingvellir National Park",
      "url": "https://www.thingvellir.is/en/education/history/law-council/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Alþingistíðindi 1918–1944 · royaume et sources parlementaires",
      "author": "Alþingi",
      "url": "https://www.althingi.is/thingstorf/leidbeiningar-og-yfirlit/althingistidindi/1918-1944/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Débats de 1918 · entrée en vigueur au 1er décembre",
      "author": "Alþingi · document parlementaire, extrait indexé",
      "url": "https://www.althingi.is/altext/althingistidindi/L030/030_sambandslagathing_1918_thingskjol.pdf",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Picturing a Nation · fondation de la République le 17 juin 1944",
      "author": "National Museum of Iceland et National Film Archive",
      "url": "https://thjodminjasafn.is/en/syningar/thjod-i-mynd-myndefni-fra-stofnun-lydveldis-1944",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Home Rule Act · adoption et entrée en vigueur distinctes",
      "author": "Government of the Faroe Islands",
      "url": "https://www.government.fo/en/foreign-relations/the-home-rule-act",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Constitutional status · nation autonome et juridiction",
      "author": "Government of the Faroe Islands",
      "url": "https://www.government.fo/en/foreign-relations/constitutional-status/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Norse · établissements, témoignage de 1408 et radiocarbone",
      "author": "National Museum of Denmark",
      "url": "https://natmus.dk/organisation/forskning-og-kulturarv/nyere-tid-og-verdens-kulturer/etnografisk-samling/arktisk-forskning/prehistory-of-greenland/norse/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Greenland · autonomie de 1979 et self-government de 2009",
      "author": "Danish Prime Minister’s Office",
      "url": "https://english.stm.dk/the-prime-ministers-office/the-unity-of-the-realm/greenland/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Landing of the Swedes · colonie de 1638 et conquête de 1655",
      "author": "Delaware Public Archives",
      "url": "https://archives.delaware.gov/delaware-historical-markers/landing-of-the-swedes/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "First State · colons suédois et finlandais et pouvoirs concurrents",
      "author": "US National Park Service · document de gestion, extrait indexé",
      "url": "https://www.nps.gov/frst/learn/management/upload/FRST_FD_508_2023-0103.pdf",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Records of the Government of the Virgin Islands · administrations et occupations",
      "author": "US National Archives · Record Group 55",
      "url": "https://www.archives.gov/research/guide-fed-records/groups/055.html/1000",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "FRUS 1917, document 889 · circulaire du 19 avril et transfert du 31 mars",
      "author": "US Department of State · source contemporaine",
      "url": "https://history.state.gov/historicaldocuments/frus1917/d889",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Guide to Virgin Islands Records · cérémonie du 31 mars 1917",
      "author": "US National Archives",
      "url": "https://www.archives.gov/philadelphia/finding-aids/us-virgin-islands",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Main outlines of Finnish history · phases suédoise et grand-ducale",
      "author": "thisisFINLAND · Ministry for Foreign Affairs",
      "url": "https://finland.fi/life-society/main-outlines-of-finnish-history/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "One hundred years since declaration of independence · 4 et 6 décembre 1917",
      "author": "Finnish Government",
      "url": "https://valtioneuvosto.fi/en/-/one-hundred-years-since-declaration-of-independence",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "The special status of the Åland Islands · souveraineté, autonomie et démilitarisation",
      "author": "Finnish Ministry for Foreign Affairs",
      "url": "https://um.fi/sr/the-special-status-of-the-aland-islands",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Historical outline · palais, royautés et grand-duché",
      "author": "National Museum · Palace of the Grand Dukes of Lithuania",
      "url": "https://www.valdovurumai.lt/en/palace-history/i/5371/historical-outline/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "State Day · couronnement commémoré le 6 juillet 1253",
      "author": "Office of the Seimas",
      "url": "https://www.lrs.lt/pls/inter/w5_show?p_k=2&p_r=8639",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "RESPUBLIKA – kas tai? · projet monarchique de 1918 non mis en œuvre",
      "author": "Seimas · Parliamentary Historical Memory Department",
      "url": "https://www.lrs.lt/sip/portal.show?p_k=1&p_r=37792",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "March 11 · restauration et continuité constitutionnelle",
      "author": "Office of the Seimas",
      "url": "https://www.lrs.lt/sip/portal.show?p_a=1000&p_k=2&p_kade_id=10&p_r=35719&p_t=275292",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "History · proclamation de 1918 et restaurations de 1990–1991",
      "author": "President of Latvia · Office",
      "url": "https://www.president.lv/en/history",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Declaration on the Restoration of Independence · texte du 4 mai 1990",
      "author": "Official Latvian legal publisher · State Language Centre translation",
      "url": "https://likumi.lv/ta/en/en/id/75539-on-the-restoration-of-independence-of-the-republic-of-latvia",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Restoration of independence · 24 février 1918 et 20 août 1991",
      "author": "Riigikogu · publication de 2026",
      "url": "https://www.riigikogu.ee/en/pressiteated/celebration-of-the-35th-anniversary-of-the-restoration-of-estonias-independence-at-toompea/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Koronacja Mieszka II · succession et royauté en 1025",
      "author": "Polish History Museum",
      "url": "https://muzhp.pl/kalendarium/koronacja-mieszka-ii",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Mieszko II · circonstances et datation incertaines du couronnement",
      "author": "Polish History Museum · entretien de recherche",
      "url": "https://mediateka.muzhp.pl/permalink/41384",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Pourquoi le 11 novembre ? · formation de la Deuxième République",
      "author": "Polish History Museum · entretien avec Grzegorz Nowik",
      "url": "https://muzhp.pl/wiedza-on-line/dlaczego-swietujemy-11-listopada-narodziny-ii-rp",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Union of Lublin 1569 · ouvrage et acte du 1er juillet",
      "author": "Sejm Publishing Office · direction Dariusz Kupisz, 2019",
      "url": "https://wydawnictwo.sejm.gov.pl/publikacja/union-of-lublin-1569/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Federalism in the history of Poland · 1569 et partage de 1795",
      "author": "Sejm · exposition documentaire, extrait indexé",
      "url": "https://oide.sejm.gov.pl/oide/en/images/files/wystawa2/1rp.pdf",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Livonija · pouvoirs, frontières et critique du terme confédération",
      "author": "Ilgvars Misāns · Latvian National Encyclopaedia, mise à jour septembre 2026",
      "url": "https://enciklopedija.lv/skirklis/150531-livonija",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Livonian lords and Empire · obligations et recomposition de 1561",
      "author": "Valda Kļava · Institute of Latvian History, article de 2014, résumé consulté",
      "url": "https://www.lvi.lu.lv/fileadmin/user_upload/lu_portal/lvi.lu.lv/LVIZ_Numuri/2014_1/I_Misans_Hierarhijas_aspekti_LVIZ__2014_1__90_.pdf",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Full-text archives · établissements suédois de 1561 et fin de 1710",
      "author": "National Archives of Estonia",
      "url": "https://www.ra.ee/en/the-full-text-search-platform-is-open/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Preußen, Herzogtum 1525–1701 · souveraineté et héritage",
      "author": "Geheimes Staatsarchiv Preußischer Kulturbesitz",
      "url": "https://gsta.preussischer-kulturbesitz.de/recherche/thematischer-wegweiser/preussen-herzogtum-1525-1701.html",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Preußen · couronne de 1701, provinces et dissolution de 1947",
      "author": "Geheimes Staatsarchiv Preußischer Kulturbesitz",
      "url": "https://gsta.preussischer-kulturbesitz.de/recherche/thematischer-wegweiser/preussen-koenigreich-und-provinz-ostpreussen-1701-1945.html",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Brandenburg · union personnelle de 1618 et transformation de 1701",
      "author": "Brandenburg State Agency for Civic Education",
      "url": "https://www.politische-bildung-brandenburg.de/brandenburg/geschichte",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Preußen 1918–1947 · transformations et dissolution",
      "author": "Rundfunk Berlin-Brandenburg · série documentaire historique",
      "url": "https://www.preussenchronik.de/service/beitrag_jsp/key%3Dbeitrag_25062.html",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Homage 500 · sécularisation et traité de Cracovie de 1525",
      "author": "Malbork Castle Museum · exposition de 2025, coquille de date signalée",
      "url": "https://zamek.malbork.pl/en/exhibition/homage-500-anniversary-exhibition/",
      "supports": [
        "chronology",
        "geographic-context"
      ]
    },
    {
      "title": "Indigenous and National Minority Affairs · Kven / Norwegian Finns",
      "author": "Norwegian Ministry of Local Government and Regional Development",
      "url": "https://www.regjeringen.no/en/dep/kdd/organisation/departments/Department_of_Indigenous_and_National_Minority_Affairs/id589401/",
      "supports": [
        "living-people",
        "historical-context"
      ]
    },
    {
      "title": "ICC International · Inuit de Kalaallit Nunaat et autres régions",
      "author": "Inuit Circumpolar Council",
      "url": "https://www.inuitcircumpolar.com/icc-international/",
      "supports": [
        "living-people",
        "historical-context"
      ]
    },
    {
      "title": "Continuity of Livonian · communauté, transmission et revitalisation",
      "author": "University of Latvia Livonian Institute · projet 2024–2026",
      "url": "https://www.livonian.lv/en/current-projects/continuity-of-livonian-understanding-language-transmission-processes-in-a-critically-endangered-contemporary-indigenous-community-to-develop-process-driven-instruments-for-preservation-and-revitalisa/",
      "supports": [
        "living-people",
        "historical-context"
      ]
    },
    {
      "title": "Countries 2010 et 2024 · unités et périmètres de diffusion",
      "author": "European Commission · Eurostat GISCO",
      "url": "https://ec.europa.eu/eurostat/web/gisco/geodata/administrative-units/countries",
      "supports": [
        "geometry",
        "geographic-context"
      ]
    },
    {
      "title": "Administrative units · conditions de réutilisation et attribution",
      "author": "European Commission · Eurostat GISCO",
      "url": "https://ec.europa.eu/eurostat/web/gisco/geodata/administrative-units",
      "supports": [
        "geographic-context"
      ]
    },
    {
      "title": "Cliopatria v0.2.1 · propriétés, catégories et géométries conservées",
      "author": "Seshat Global History Databank",
      "url": "https://github.com/Seshat-Global-History-Databank/cliopatria/tree/v0.2.1",
      "supports": [
        "geographic-context"
      ]
    },
    {
      "title": "Historical Basemaps · attributions et noms sources",
      "author": "André Ourednik et contributeurs",
      "url": "https://github.com/aourednik/historical-basemaps",
      "supports": [
        "geographic-context"
      ]
    }
  ],
  "sourceCriticism": [
    {
      "sources": [
        "https://danmarkshistorien.lex.dk/Kalmarunionen%2C_1397-1523",
        "https://danmarkshistorien.lex.dk/Unionsbrevet_1397_om_regeringsud%C3%B8velsen_i_Kalmarunionen"
      ],
      "note": "1397 marque le couronnement commun, alors que des rapprochements précèdent et que le fonctionnement devient discontinu. Le texte d’union est distingué d’un contrôle effectif homogène et les renoncements ultérieurs de 1524 ne remplacent pas automatiquement la convention de 1523."
    },
    {
      "sources": [
        "https://www.kongehuset.no/historie/kongerekken"
      ],
      "note": "872 est explicitement une datation traditionnelle avec des propositions plus tardives ; aucun début certain du royaume ou du peuple n’est déduit."
    },
    {
      "sources": [
        "https://www.royal.uk/canute-great-r-1016-1035",
        "https://natmus.dk/historisk-viden/temaer/kongeraekken/knud-1-den-store/?force=desktop"
      ],
      "note": "Les couronnes anglaise de 1016, danoise de 1018 et norvégienne de 1028 ne sont pas simultanées pendant tout le règne."
    },
    {
      "sources": [
        "https://www.thingvellir.is/en/education/history/",
        "https://www.thingvellir.is/fraedsla/saga/"
      ],
      "note": "Le texte anglais termine en 1262 ; le texte islandais conserve 1262–1264. La fourchette est conservée, sans extinction des Islandais en 1271 ou fondation automatique en 936."
    },
    {
      "sources": [
        "https://www.althingi.is/thingstorf/leidbeiningar-og-yfirlit/althingistidindi/1918-1944/",
        "https://thjodminjasafn.is/en/syningar/thjod-i-mynd-myndefni-fra-stofnun-lydveldis-1944"
      ],
      "note": "1939 et 1946 sont les bornes de noms sources, distinctes de la transition républicaine du 17 juin 1944."
    },
    {
      "sources": [
        "https://www.government.fo/en/foreign-relations/the-home-rule-act",
        "https://www.government.fo/en/foreign-relations/constitutional-status/"
      ],
      "note": "Le 23 mars 1948 date la loi, le 1er avril son entrée en vigueur. Les Féroé restent une juridiction autonome dans le royaume, sans naissance des communautés déduite."
    },
    {
      "sources": [
        "https://natmus.dk/organisation/forskning-og-kulturarv/nyere-tid-og-verdens-kulturer/etnografisk-samling/arktisk-forskning/prehistory-of-greenland/norse/"
      ],
      "note": "1408 est le dernier témoignage écrit cité ; les données radiocarbone prolongent une présence au moins jusqu’au milieu du XVe siècle. 1384 n’est pas une extinction de population et la géométrie de l’île ne prouve pas une occupation uniforme."
    },
    {
      "sources": [
        "https://www.archives.gov/research/guide-fed-records/groups/055.html/1000",
        "https://history.state.gov/historicaldocuments/frus1917/d889",
        "https://www.archives.gov/philadelphia/finding-aids/us-virgin-islands"
      ],
      "note": "Le guide RG55 mentionne le 28 mars 1917 comme transfert ; la circulaire contemporaine du 19 avril et le guide spécialisé concordent sur le 31 mars pour paiement, transfert et prise de possession. Le 28 mars n’est pas repris comme cérémonie de transfert."
    },
    {
      "sources": [
        "https://finland.fi/life-society/main-outlines-of-finnish-history/",
        "https://valtioneuvosto.fi/en/-/one-hundred-years-since-declaration-of-independence"
      ],
      "note": "La formule de « vide politique » avant le XIIe siècle n’est pas adoptée comme absence de sociétés ou d’institutions locales. 1809 date une transformation administrative, pas une naissance de peuple ; 4 et 6 décembre 1917 restent distincts."
    },
    {
      "sources": [
        "https://www.lrs.lt/sip/portal.show?p_k=1&p_r=37792",
        "https://www.lrs.lt/sip/portal.show?p_a=1000&p_k=2&p_kade_id=10&p_r=35719&p_t=275292"
      ],
      "note": "Le projet monarchique de 1918 n’est pas mis en œuvre. Le libellé Kingdom of Lithuania pour 1919–1939 est contextualisé comme république, sans modification des propriétés et contours sources."
    },
    {
      "sources": [
        "https://likumi.lv/ta/en/en/id/75539-on-the-restoration-of-independence-of-the-republic-of-latvia",
        "https://www.president.lv/en/history",
        "https://www.riigikogu.ee/en/pressiteated/celebration-of-the-35th-anniversary-of-the-restoration-of-estonias-independence-at-toompea/"
      ],
      "note": "La continuité constitutionnelle, les proclamations, les restaurations et les dates de première présence cartographique sont distinguées du contrôle effectif du territoire."
    },
    {
      "sources": [
        "https://enciklopedija.lv/skirklis/150531-livonija",
        "https://www.lvi.lu.lv/fileadmin/user_upload/lu_portal/lvi.lu.lv/LVIZ_Numuri/2014_1/I_Misans_Hierarhijas_aspekti_LVIZ__2014_1__90_.pdf"
      ],
      "note": "Le terme confédération livonienne est critiqué par la recherche pour l’absence de cadre formel suffisamment intégré. Les terres des ordres, des évêchés et des villes ne sont pas un État centralisé unique."
    },
    {
      "sources": [
        "https://zamek.malbork.pl/en/exhibition/homage-500-anniversary-exhibition/",
        "https://gsta.preussischer-kulturbesitz.de/recherche/thematischer-wegweiser/preussen-herzogtum-1525-1701.html"
      ],
      "note": "La page de l’exposition du cinquième centenaire contient la formule contradictoire « cinq cents ans auparavant, le 8 avril 2025 ». Le cadre de 1525 est établi par le sujet et recoupé avec les archives ; 2025 est l’année anniversaire, pas la date du traité."
    },
    {
      "sources": [
        "https://gsta.preussischer-kulturbesitz.de/recherche/thematischer-wegweiser/preussen-herzogtum-1525-1701.html",
        "https://enciklopedija.lv/skirklis/150531-livonija"
      ],
      "note": "La formulation qui étend la fin de l’ordre teutonique en 1525 à tout l’espace baltique n’est pas adoptée : la branche livonienne connaît une autre chronologie."
    },
    {
      "sources": [
        "https://muzhp.pl/kalendarium/koronacja-mieszka-ii",
        "https://mediateka.muzhp.pl/permalink/41384"
      ],
      "note": "Le calendrier du musée donne le 25 décembre 1025 pour Mieszko II, alors que l’entretien de recherche souligne l’incertitude des circonstances et de la date précise. Seule l’année est reprise."
    },
    {
      "sources": [
        "https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/stormaktstiden",
        "https://sweden.se/culture/history/history-of-sweden",
        "https://finland.fi/life-society/main-outlines-of-finnish-history/",
        "https://spbiiran.ru/en/300th-anniversary-of-the-peace-of-nystad-virtual-exhibition-of-one-document/"
      ],
      "note": "1718 est une borne de périodisation de la grande puissance suédoise ; 1721 est un repère de paix territoriale. Ils ne datent pas une disparition de l’État suédois."
    },
    {
      "sources": [
        "https://ec.europa.eu/eurostat/web/gisco/geodata/administrative-units/countries",
        "https://ec.europa.eu/eurostat/web/gisco/geodata/administrative-units"
      ],
      "note": "Les millésimes 2010 et 2024 n’établissent pas un jour exact. Les codes DK, GL et FO sont séparés ; NO n’inclut pas toutes les unités arctiques. La sélection des unités conserve les propriétés et coordonnées, sans simplification ou reprojection."
    }
  ],
  "sourceAccess": [
    {
      "url": "https://sweden.se/culture/history/history-of-sweden",
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    },
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      "url": "https://www.althingi.is/altext/althingistidindi/L030/030_sambandslagathing_1918_thingskjol.pdf",
      "access": "indexed-pdf-text",
      "fullPdfRead": false
    },
    {
      "url": "https://www.nps.gov/frst/learn/management/upload/FRST_FD_508_2023-0103.pdf",
      "access": "indexed-pdf-text",
      "fullPdfRead": false
    },
    {
      "url": "https://oide.sejm.gov.pl/oide/en/images/files/wystawa2/1rp.pdf",
      "access": "indexed-pdf-text",
      "fullPdfRead": false
    },
    {
      "url": "https://www.lvi.lu.lv/fileadmin/user_upload/lu_portal/lvi.lu.lv/LVIZ_Numuri/2014_1/I_Misans_Hierarhijas_aspekti_LVIZ__2014_1__90_.pdf",
      "access": "indexed-research-summary",
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    }
  ],
  "giscoReuse": {
    "license": "Eurostat GISCO administrative units · non-commercial reuse conditions",
    "attribution": "© EuroGeographics pour les limites administratives",
    "exactConditions": "https://ec.europa.eu/eurostat/web/gisco/geodata/administrative-units",
    "yearIsNotExactDay": true,
    "sourceGeometryReprojection": false
  },
  "limitations": [
    "Les millésimes ne sont pas reportés sur d’autres dates.",
    "L’identité et la souveraineté ne sont pas déduites d’un nom, d’un point de capitale ou d’un code pays.",
    "Les deux atlas ne sont pas déclarés indépendants par leur seule différence de nom.",
    "Les métropoles et territoires dépendants conservent des périmètres distincts.",
    "L’objectif mondial et le contrôle segmentaire des frontières restent incomplets."
  ]
}