Question: Which country Amalia Of Solms-Braunfels's husband is from?

Knowledge 1: Amalia of Solms-Braunfels
Amalia of Solms-Braunfels (31 August 1602, Braunfels – 8 September 1675, The Hague), was Princess consort of Orange by marriage to Frederick Henry, Prince of Orange.She acted as the political adviser of her spouse during his reign, and acted as his de facto deputy and regent during his infirmity from 1640–47.She also served as chair of the regency council during the minority of her grandson William III, Prince of Orange from 1650 until 1672.She was the daughter of countJohn AlbertI of Solms-Braunfels and countess Agnes of Sayn-Wittgenstein. [SEP] Knowledge 2: Frederick Henry, Prince of Orange
Frederick Henry (29 January 1584 – 14 March 1647) was the sovereign prince of Orange and stadtholder of Holland, Zeeland, Utrecht, Guelders, Overijssel in the Dutch Republic from 1625 until his death in 1647.The last seven years of his life he also was the stadtholder of Groningen (1640-1647).As the leading soldier in the Dutch wars against Spain, his main achievement was the successful Siege of 's-Hertogenbosch in 1629.It was the main Spanish base and a well-fortified city protected by an experienced Spanish garrison and by formidable water defenses.His strategy was the successful neutralization of the threat of inundation of the area around 's-Hertogenbosch and his capture of the Spanish storehouse at Wesel.
Knowledge 1: Amalia of Solms-Braunfels
Amalia of Solms-Braunfels (31 August 1602, Braunfels – 8 September 1675, The Hague), was Princess consort of Orange by marriage to Frederick Henry, Prince of Orange.She acted as the political adviser of her spouse during his reign, and acted as his de facto deputy and regent during his infirmity from 1640–47.She also served as chair of the regency council during the minority of her grandson William III, Prince of Orange from 1650 until 1672.She was the daughter of countJohn AlbertI of Solms-Braunfels and countess Agnes of Sayn-Wittgenstein. [SEP] Knowledge 2: William, Prince of Solms-Braunfels
Wilhelm Christian Karl, 3rd Prince of Solms Braunfels (9 January 1759, in Braunfels – 20 March 1837, in Braunfels) was by succession an immediate Prince, then a nobleman and head of the Princely House of Solms-Braunfels, a Prussian major general and Hessian deputy.
Knowledge 1: Frederick Henry, Prince of Orange
Frederick Henry (29 January 1584 – 14 March 1647) was the sovereign prince of Orange and stadtholder of Holland, Zeeland, Utrecht, Guelders, Overijssel in the Dutch Republic from 1625 until his death in 1647.The last seven years of his life he also was the stadtholder of Groningen (1640-1647).As the leading soldier in the Dutch wars against Spain, his main achievement was the successful Siege of 's-Hertogenbosch in 1629.It was the main Spanish base and a well-fortified city protected by an experienced Spanish garrison and by formidable water defenses.His strategy was the successful neutralization of the threat of inundation of the area around 's-Hertogenbosch and his capture of the Spanish storehouse at Wesel. [SEP] Knowledge 2: William, Prince of Solms-Braunfels
Wilhelm Christian Karl, 3rd Prince of Solms Braunfels (9 January 1759, in Braunfels – 20 March 1837, in Braunfels) was by succession an immediate Prince, then a nobleman and head of the Princely House of Solms-Braunfels, a Prussian major general and Hessian deputy.

Answer: Dutch Republic