Synthesized answer
The provided passages do not contain information about an "Edict by the King of Prussia" or any unanswered questions related to it. The only passage available is from "The Works of Benjamin Franklin by Benjamin Franklin" and does not address the specified topic [1]. Therefore, the question cannot be answered from the given text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: The Works of Benjamin Franklin by Benjamin Franklin Pages: 564