Why did the black hand gang want to assassinate archduke franz fredinand?

The Black Hand gang sought to assassinate Archduke Franz Ferdinand primarily because they opposed Austro-Hungarian rule over Bosnia and Herzegovina, which they viewed as a threat to Slavic nationalism. The group aimed to promote the idea of a Greater Serbia and believed that killing the archduke would further their cause for independence. The assassination was seen as a way to spark a wider revolution against Austro-Hungarian authority in the region.