Causes of World War I corrective." British Diplomat Arthur Nicolson wrote in May 1914, “Since I have been at the Foreign Office I have not seen such calm waters.” On 28 June 1914, Archduke Franz Ferdinand of Austria, heir presumptive to the Austro-Hungarian throne, and his wife, Sophie, Duchess of Hohenberg, were shot dead, by two gun shots in Sarajevo by Gavrilo Princip, one of a group of six assassins (five Serbs and one Bosniak) coordinated by Danilo Ilić, a Bosnian Serb and a member of the Black Hand secret society. The assassination is significant because it was perceived by Austria-Hungary as an existential challenge
Coffee culture in former Yugoslavia time prevented from kafanas by a strong social prohibition. In the 1900s, young Serbian nationalists in Belgrade met in the city's kafanas where they openly discussed hatred for Austro-Hungary, and desire for Yugoslavism. Gavrilo Princip, the assassin of Archduke Franz Ferdinand, visited those kafanas in 1912. The "Crni konj" ("Black horse") café in Varoš-kapija quarter was a meeting place for Ottoman Serb refugees and "pečalbari" (seasonal workers). In the late 1970s, a new type of drinking establishment first appeared in Yugoslavia: the "caffe bar" or colloquially "kafić". These bars normally serve espresso instead of Turkish coffee, tea and soft drinks,