Which MAIN cause of WWI led the Serbians to create the "Black Hand" terrorist group that led to the killing of the Archduke?

Question

Which MAIN cause of WWI led the Serbians to create the "Black Hand" terrorist group that led to the killing of the Archduke?

Alliances- The Serbs wanted to be allied with the Austro-Hungarian empire.

Militarism- The Serbs wanted to have the most powerful military in Europe.

Nationalism- The Serbs wanted their own government that would represent them.

Answer 1

Imperialism- The Serbs were opposed to the expansion of the Austro-Hungarian empire into the Balkans and wanted to maintain their independence and sovereignty.