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The assassination of Archduke Franz Ferdinand from this country was the spark that ignited a series of defense alliances that led to WW I.

AGermany
CRussia
BItaly
DAustria-Hungary

Verified Answer :

Billymkhoi

Archduke Franz Ferdinand was from Austria- Hungary. The best answer is d. Austria- Hungary.

Neuron

Archduke Franz Ferdinand was the Archudke of D - Austro-Hungary.

He was the leader and ruler of this nation that had once been extremely powerful and ruled over central Europe. During the time of his assassination there have already been some issue present in the Empire, mostly happening due to nationalistic tendencies of the nations that were considered to be under Austro-Hungarian rule. This, in the end, manifested in his assassination.