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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It was the incident which expedited U.S involvement in World War 1.
The colonies (13) would first pick up Africans from Africa, then travel back to the US to keep some for their own and then trade them to Europe. This is also known as the Triangular Slave Trade. If you are to look on a map, you can see that from Africa, to the US, then to Europe, it forms a triangle.
The French who had direct contact with the Americans were able to successfully implement Enlightenment ideas into a new political system. The National Assembly in France even used the American Declaration of Independence as a model when drafting the Declaration of the Rights of Man and the Citizen in 1789
The Kingdom of Prussia (aka "Germany") and the Austrian Empire joined together to seize the territory of Schleswig-Holstein from Denmark due to the regions majority German population.
