Final answer:
The terrorist group that planned to assassinate Franz Ferdinand was called The Black Hand.
Step-by-step explanation:
The terrorist group that was infuriated by Franz Ferdinand's appearance in Sarajevo and wanted to assassinate him was called The Black Hand. The Black Hand was a secret society formed in 1911 by Serbian military officers. They sought to unite all Serbs under one nation, and they saw Franz Ferdinand as a threat to their cause.
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