The spark that set off world war one1 was the assassination of archduke franz ferdinand of what european nation?

A.Austria-Hungary
B.Germany
C.Russia
D.France

Is the answer A?

Yes.

Yes, the correct answer is A. The spark that set off World War I was the assassination of Archduke Franz Ferdinand of Austria-Hungary. To arrive at this answer, you can use historical knowledge or conduct a quick search to find the information. In this case, knowing the events leading up to World War I and the key players involved would help you identify Austria-Hungary as the correct answer.