List of territory purchased by a sovereign nation from another sovereign nation

This is a list of purchases of territory by a sovereign nation from another sovereign nation.

TerritoryPurchased byPurchased fromCostYearAreaCost/AreaAgreement (article) Isle of Man, Hebrides, Kintyre and islands of the Firth of Clyde Scotland Norway4,000 marks sterling, 100 mark annuity1266~8,000 km²~0.5 marks sterling/km²Treaty of Perth Dunkirk and Fort-Mardyck5,000,000 livres1662~44 km²~113,500 livres/km²Sale of Dunkirk Estonia, Livonia, Ingria, and Southeast Finland (Kexholmslän and part of Karelian Isthmus) Original handwritten text of the Treaty of Nystad in Russian Ништадтский мирный договор между Россией и Швецией, 30 августа 1721 г. Text of the Treaty of Nystad in Russian2,000,000 silver Swedish riksdaler1721~100,000 km²~2,000 Riksdaler/km²Treaty of NystadSaint Croix750,000 livres1733210 km²3571 livres/km²Louisiana$15,000,000 USD18032,140,000 km²7 USD/km²Louisiana PurchaseFlorida $5,000,000 USD1819~200,000 km²~25 USD/km²Adams–Onís TreatySingapore $60,000 Spanish dollars1824728 km²~82 Spanish dollars/km² Tranquebar, Serampore, and other continental holdings of Danish India 125,000 GBP or 1,125,000 Danish krone1845~44 km²~2840 GBP/km² or ~25,600 Kr/km² California, Nevada, Utah, Arizona $18,250,000 USD18481,360,000 km²13.4 USD/km²Treaty of Guadalupe HidalgoSouthern Arizona and New Mexico$10,000,000 USD185376,800 km²130 USD/km²Gadsden Purchase Danish Gold Coast 10,000 GBP1850~12,000 km²~1.2 GBP/km²Saxe-Lauenburg 2,500,000 Danish rigsdalerWolfgang Neugebauer (Hrsg.): Handbuch der preußischen Geschichte. Band 2: Das 19. Jahrhundert und große Themen der Geschichte Preußens. Verlag De Gruyter, Berlin 1992, , S. 340 books.google 18651,000 km²2,500 Rigsdaler/km²Gastein ConventionAlaska$7,200,000 USD18671,717,856 km²4 USD/km²Alaska PurchaseDutch Gold Coast46,939.62 Dutch guilders1872Anglo-Dutch Treaties of 1870–1871Saint Barthélemy 320,000 French francs187821 km²15,238 Francs/km²Philippines$20,000,000 USD1898300,000 km²20 USD/km²Treaty of ParisCaroline Islands25,000,000 ESP18991,160 km²21,551 ESP/km²German–Spanish TreatyPalauMariana IslandsCagayan Sulu and Sibutu$100,000 USD1900467 km²214 USD/km²Treaty of Washington Acre (state) £2,000,0001903142,800 km²14 GBP/km²Treaty of Petrópolis Danish West Indies $25,000,000 USD1916400 km²62,500 USD/km²Treaty of the Danish West IndiesJäniskoski-Niskakoski territoryAsetus Jäniskosken ja Niskakosken alueen liittämisestä Neuvostoliiton alueeseen sekä Suomessa olevien, Neuvostoliitolle siirtyneiden entisten saksalaisten rahavarojen käytöstä tehtyjen sopimusten voimaansaattamisesta. 9/1947, Valtiosopimukset, Finlex Kosonen, Matti & Pohjonen, Juha: Isänmaan portinvartijat: Suomen rajojen vartiointi 1918-1994, s. 343-345. Rajavartiolaitoksen julkaisu. Helsinki: Otava, 1994. . 700,000,000 FIM1947176 km²700 FIM/km²Gwadar5,500,000,000 PKR195815,210 km²361,604 PKR/km²Gwadar PurchaseUninhabited area of Kammerwald53,277,370 DM1961~5 km²10.6 million DM/km²Luxembourg annexation plans after the Second World WarElten, Selfkant, and Suderwick280,000,000 DM196369 km²4.1 million DM/km²Ausgleichsvertrag References