I want to know the answer to the following question:
What was the overarching Prussian motive in starting a war with France?
All the background I'm provided with is that "This aim was epitomized by Prussian Chancellor Otto von Bismarck's later statement: "I did not doubt that a Franco-German war must take place before the construction of a United Germany could be realised.". Is that enough to answer the question?
Answer: no