The person Cvjetko Popović was involved in the assassination of became heir presumptive to the Austro-Hungarian throne in what year?
Cvjetko Popović: Cvjetko Popović (Serbian Cyrillic: Цвјетко Поповић; 1896 – 9 June 1980) was a Bosnian Serb who was involved in the 1914 assassination of Archduke Franz Ferdinand of Austria. Archduke Franz Ferdinand of Austria: Franz Ferdinand Carl Ludwig Joseph Maria (18 December 1863 – 28 June 1914) was an Archduke of Austria-Este, Austro-Hungarian and Royal Prince of Hungary and of Bohemia and, from 1896 until his death, heir presumptive to the Austro-Hungarian throne.
1896