The 1910s represented the culmination of European militarism which had its beginnings during the second half of the 19th century. The conservative lifestyles during the first half of the decade, as well as the legacy of military alliances, were forever changed by the June 28, 1914 assassination of Archduke Franz Ferdinand, the heir presumptive to the Austro-Hungarian throne. The archduke's murder triggered a chain of events in which, within 33 days, World War I broke out in Europe on August 1, 1914. The conflict dragged on until a truce was declared on November 11, 1918, leading to the controversial and one-sided Treaty of Versailles, signed on June 28, 1919.