Answer:
As of right now (3/17/2020) no, they haven't been canceled.
Explanation:
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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True. This is shown by the Soviet Union shipping supplies to cuba.