Question: What other country was Caroline Amalie's spouse king of besides Denmark?

Context articles: Princess Thyra of Denmark (1880–1945)
Gunilla Bielke
Wilhelm Herman Barth
Charlotte Amalie, U.S. Virgin Islands
Countess Caroline of Erbach-Fürstenau
Ingeborg Christiane Rosenørn
Caroline Thielo
Princess Amalie of Hohenzollern-Sigmaringen
Caroline Amalie of Augustenburg
Christian VIII of Denmark

Princess Thyra of Denmark and Iceland (Thyra Louise Caroline Amalie Augusta Elisabeth; Copenhagen, 14 March 1880 – Copenhagen, 2 November 1945) was the sixth child and third daughter of Frederick VIII of Denmark and his wife, Princess Louise of Sweden and Norway.
Gunilla Bielke; Swedish: "Gunilla Johansdotter Bielke af Åkerö" (25 June 1568 – 19 July 1597) was Queen of Sweden as the second spouse King John III.
 Queen Gunilla is acknowledged to have acted as the political adviser to John III and to have influenced his religious policies in favor of Protestantism.
He was born in Copenhagen, the son of carpenter Friderich Wilhelm Barth (born in Berlin in 1787) and Eleonora Elisabeth, née Schultz.
 In 1834 he married Caroline Amalie Marquard, daughter of the manager Johan Hendrik Marquard.
Charlotte Amalie ( or ), located on the island of St. Thomas, is the capital and the largest city of the United States Virgin Islands, founded in 1666 as Taphus (meaning "beer house" or "beer hall").
 In 1691, the town was renamed to Amalienborg (in English "Charlotte Amalie") after Charlotte Amalie of Hesse-Kassel (1650–1714), queen consort to King Christian V of Denmark-Norway.
 It has a deep-water harbor that was once a haven for pirates and is now one of the busiest ports of call for cruise ships in the Caribbean, with about 1.5 million cruise ship passengers landing there in 2004.
 Protected by Hassel Island, the harbor has docking and fueling facilities, machine shops, and shipyards and was a U.S. submarine base until 1966.
 The town has been inhabited for centuries.
 When Christopher Columbus came here in 1493, the area was inhabited by Island Caribs and Taíno.
 It is on the southern shore at the head of Saint Thomas Harbor.
 In 2010 the city had a population of 18,481, which makes it the largest city in the Virgin Islands Archipelago.
 Hundreds of ferries and yachts pass through town each week, and at times the population more than doubles.
Countess Caroline Amalie of Erbach-Fürstenau (born: 29 September 1700 at Fürstenau Castle, Michelstadt – died: 7 May 1758 in Hildburghausen), was a countess of Erbach-Furstenau and by marriage Duchess of Saxe-Hildburghausen.
 From 1745 to 1748, she was also Regent of Saxe-Hildburghausen.
Ingeborg Christiane Rosenörn (1784-1859) was a Danish courtier and philanthropist; Overhofmesterinde to the Danish queen, Caroline Amalie of Augustenburg from 1845 to 1859.
Caroline Amalie Thielo (March 1, 1735 – February 5, 1754) was a Danish actress, one of her country's first professional native female actors, and said to be the first actress ever employed at the Royal Danish Theatre in Copenhagen.
 She was very popular in the mid 18th century, and was also employed as a translator of plays for the theatre.
Princess "Amalie" Antoinette Karoline Adrienne of Hohenzollern-Sigmaringen, German: "Amalie Antoinette Karoline Adrienne, Prinzessin von Hohenzollern-Sigmaringen" (30 April 1815, Sigmaringen, Principality of Hohenzollern-Sigmaringen – 14 January 1841, Sigmaringen, Principality of Hohenzollern-Sigmaringen) was a member of the House of Hohenzollern-Sigmaringen and a Princess of Hohenzollern-Sigmaringen by birth.
 Through her marriage to Prince Eduard of Saxe-Altenburg, Amalie was also a member of the House of Saxe-Altenburg and Princess of Saxe-Altenburg.
 Marie Antoinette was a grand-niece of Joachim Murat, King of the Two Sicilies from 1808 to 1815 and a brother-in-law of Napoleon Bonaparte, through marriage to Napoleon's youngest sister, Caroline Bonaparte.
Caroline Amalie of Schleswig-Holstein-Sonderburg-Augustenburg (28 June 1796 – 9 March 1881) was queen consort of Denmark as the second spouse of King Christian VIII between 1839 and 1848.
Christian VIII (18 September 1786 – 20 January 1848) was the King of Denmark from 1839 to 1848 and, as Christian Frederick, King of Norway in 1814.