Blackhand

Terrorist group of Bosnian Serbs who were
destined to free Bosnia from Austria-Hungary.
Bosnia wanted to be independent, and no matter
how violent it got, they would do anything to
separate themselves. Arguably the leading factor
to the cause of WW1. After the assassination of
the Archduke, the refusal of complying by Serbia
led to a rivalry, which soon led to the first world
war. (24)