Dorgon vs Isabella I of Castile

Upon the death of Hong Taiji, Dorgon was appointed as regent for the young Shunzhi Emperor. This position gave him effective control over the Qing government and military, enabling him to direct the conquest of Ming China.

Dorgon allied with Ming general Wu Sangui to defeat Li Zicheng's rebel forces at Shanhai Pass. This victory allowed Qing forces to enter Beijing and establish the Qing dynasty as the ruling power in China.

Dorgon led Qing forces in a campaign against the Southern Ming regime, capturing Nanjing and defeating the Hongguang Emperor. This campaign extended Qing control over the Yangtze River valley and weakened Ming loyalist resistance.

Dorgon mandated that all Chinese men adopt the Manchu queue hairstyle as a sign of submission to Qing rule. This policy caused widespread resentment and resistance, but was enforced to consolidate Qing control over Han Chinese subjects.

Dorgon died suddenly while hunting. After his death, the Shunzhi Emperor accused him of plotting to usurp the throne, stripped him of all titles, and had his corpse mutilated. This posthumous purge reflected court factional struggles.

Isabella married Ferdinand II of Aragon in Valladolid, uniting the kingdoms of Castile and Aragon. This dynastic union laid the foundation for the unified Spanish monarchy and enabled joint policies including the Reconquista and overseas exploration.

Isabella obtained papal approval to establish the Spanish Inquisition in Castile, aimed at maintaining Catholic orthodoxy among converted Jews and Muslims. The Inquisition operated under royal control, conducting trials and executions for heresy.

Isabella and Ferdinand completed the Reconquista by capturing the Nasrid kingdom of Granada. The surrender of the last Muslim state in Iberia ended 781 years of Islamic rule and unified Spain under Christian rule.

Isabella and Ferdinand issued the Alhambra Decree ordering the expulsion of all Jews from Spain who refused conversion to Catholicism. An estimated 40,000 to 200,000 Jews were forced to leave, causing demographic and economic disruption.

Isabella agreed to fund Christopher Columbus's expedition across the Atlantic, providing three ships and supplies. Columbus reached the Bahamas on October 12, initiating sustained European contact with the Americas and the Spanish colonial empire.

Isabella and Ferdinand negotiated the Treaty of Tordesillas with Portugal, dividing newly discovered lands outside Europe along a meridian 370 leagues west of the Cape Verde islands. This agreement shaped colonial claims in the Americas and Africa.