I want to know the answer to the following question:
What major power of the time was not involved in The Seven Years' War?
All the background I'm provided with is that "Considered a prelude to the two world wars and the greatest European war since the Thirty Years War of the 17th century, it once again split Europe into two coalitions, led by Great Britain on one side and France on the other.". Is that enough to answer the question?
Answer: no