The Seven Years War was fought on six continents — Europe, North America, South America, Africa, West Asia (India) and East Asia (Philiplines).
That’s why it’s called the First World-wide war.
Yes, I mentioned Britain and Germany allied against France, but there were many other powers involved, which are listed in the link I included.
Now, for a test bonus question, who do you think started the First World-wide War — yes, it was inadvertant?
In an irony of truly boggling proportions, one G. Washington started the Seven Years War, by (probably unintentionally) murdering a French diplomat.