The Thirty Years War was a conflict between France, Sweden, Denmark and the Netherlands on one side against Austria, who were supported by which other country?
Thirty Years' War the "Spanish Road" connecting Habsburg Spain with the Habsburg possessions in the Netherlands and Austria was severed. Philip IV could no longer physically send reinforcements to the Low Countries. On 4 December 1642, Cardinal Richelieu died. However, his policy of war by diversion continued to pay dividends to France. Spain was unable to resist the continuing drumbeat of French victories—Gravelines was lost to the French in 1644, followed by Hulst in 1645 and Dunkirk in 1646. The Thirty Years' War would continue until 1648 when the Peace of Westphalia was signed. The conflict between France and Spain continued in Catalonia
Denmark–Netherlands relations Holy Roman Empire. Emperor Charles V of the Holy Roman Empire supported Frederick II, Elector Palatine for the Danish crown, and Denmark participated in the war on the side of France. A year later, Denmark declared war on the Netherlands, at that time under Charles's rule. On 23 May 1544 the Treaty of Speyer was signed between Denmark and the Holy Roman Empire. The Torstenson War was a short period of conflict between Sweden and Denmark-Norway which occurred in 1643 to 1645 during the waning days of the Thirty Years' War. The Dutch Empire were allies with Sweden. When the