Ahmed I vs King Injo of Joseon

Upon his accession, Ahmed I spared his brother Mustafa I from execution, breaking the tradition of fratricide established by Mehmed II. Instead, he placed Mustafa in confinement (kafes). This reform changed Ottoman succession practices, ending the killing of brothers.

Ahmed I's empire signed the Treaty of Zsitvatorok with the Habsburg monarchy, ending the Long Turkish War. The treaty recognized the Habsburg emperor as equal to the Ottoman sultan and established a peace that lasted for decades.

Ahmed I's grand vizier Kuyucu Murad Pasha brutally suppressed the Celali rebellions in Anatolia, killing tens of thousands. The rebellion was crushed by 1610, restoring order but at a high human cost, leaving the countryside devastated.

Ahmed I commissioned the construction of the Sultan Ahmed Mosque in Istanbul, known as the Blue Mosque for its blue tiles. Completed in 1616, it was the first imperial mosque built in over 40 years and became a symbol of Ottoman architecture.

Injo became king of Joseon after a coup deposed his uncle, Gwanghaegun. His reign was marked by a pro-Ming, anti-Manchu stance that led to disastrous military conflicts.

The Later Jin (Manchu) invaded Korea in response to Injo's anti-Manchu policies. Injo fled to Ganghwa Island, and the invasion ended with a treaty that forced Joseon to recognize Manchu suzerainty and pay tribute.

The Qing dynasty (formerly Later Jin) invaded Korea again after Injo refused to submit. Injo surrendered at Samjeondo, performing a humiliating ritual of submission to the Qing emperor, ending Joseon's independence in foreign policy.

Injo surrendered to the Qing emperor Hong Taiji at Samjeondo, bowing three times and kowtowing nine times. This act made Joseon a tributary state of the Qing, a humiliation that deeply affected Korean national consciousness.

Injo's eldest son, Crown Prince Sohyeon, died suddenly after returning from captivity in Qing China. Injo was suspected of poisoning him due to political differences, deepening the royal family's internal conflicts.