 Complete the following phrase:  Although settlement in the area stretches back to prehistoric times, the modern city arose as an Ottoman stronghold in the 15th century. Sarajevo has attracted international attention several times throughout its history. In 1885, Sarajevo was the first city in Europe and the second city in the world to have a full-time electric tram network running through the city, following San Francisco. In 1914, it was the site of the assassination of Archduke Franz Ferdid by local Young Bosnia activist Gavrilo Princip that sparked World War I, which also ended Austro-Hungarian rule in Bosnia and resulted in the creation of the Kingdom of Yugoslavia. Later, after World War II, the establishment of the Socialist Republic of Bosnia and Herzegovina within the Second Yugoslavia led to a massive expansion of Sarajevo, then the constituent republics capital, which culminated with the hosting of the 1984 Winter Olympics marking a prosperous era for the city. However, after the start of the Yugoslav Wars, for 1,425 days from April 1992 to February 1996, the city suffered the 