How did Otto Van Bismarck unify Germany?

Bismarck was now determined to unite the German states into a single empire, with Prussia at its core. He then escalated a quarrel with Austria and its German allies over the administration of these provinces into a war, in which Prussia was the victor. Prussia then annexed further territory in Germany. I hope that I could clarify your question.  

your answer is "graduates" hope this

answer; theory of mind;