How did the Seven Weeks' War affect German unification? O It allowed Prussia to unite with the northern German states. O It allowed Otto von Bismarck to form the German Confederation. O It made King Wilhelm I the leader of Austria as well as Prussia. O It gave the Austrian Empire control of the region of Bohemia.

It allowed Otto von Bismarck to form the German Confederation!

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. :)

the qing dynasty placed strict limits on foreign merchants' ability to trade in china.

to answer this question you need to explain more