The correct answer is : Austria!
This was called the "Austro-Prussian war".
Before this war, Austria had the leading role among the German-speaking states, and after this war, this role shifted more to Prussia (of which Bismark was the Minister President).
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To explain phenomna power. (Idk how to exactly spell phenomna so im srry if its wrong.
Delegated powers are specifically granted to the federal government.
it was England. hope this helps :)
