Peter I Karađorđević, King (Kingdom of Serbs, Croats and Slovenes) : All Data

Peter I Karađorđević was the King of Serbia from 1903 until his death in 1921. He ruled during a tumultuous period in Serbian history, including the Balkan Wars of 1912-1913 and World War I from 1914-1918. These wars greatly impacted Serbia, as they saw the country expand its territory and then suffer devastating losses. Despite the challenges, Peter I was a respected leader who worked to modernize Serbia and strengthen its position in the region. His reign marked a significant period of growth and transformation for Serbia, as it navigated through these turbulent times.