Answer:
It allowed Otto von Bismarck to form the German Confederation!
Step-by-step explanation:
The dispute over the administration of Schleswig and Holstein was a pretext found by Bismarck in 1866, which Austria and Prussia had seized from Denmark in 1864 and ever since then has been followed through with. Prussia's victory in the 7 weeks' war enabled it to organize the North German Confederation. Hope this helped. :)