I want to know the answer to the following question:
On what date did Bismarkck receive the disturbing report on the Posen situation?
All the background I'm provided with is that "An alarming report on the Posen situation, sent to Bismarck on 16 August 1870, led to the quartering of reserve troop contingents in the restive province.". Is that enough to answer the question?
Answer: yes