Seeing as it was a close ally of Britain, and had an interest in American possessions not going their own way, why did Portugal not get involved on Britain's side?
Equally, why did Austria not take it as an opportunity to hit France?
Seeing as it was a close ally of Britain, and had an interest in American possessions not going their own way, why did Portugal not get involved on Britain's side?
Equally, why did Austria not take it as an opportunity to hit France?
Remember that Portugal is still recovering from the 1755 earthquake, and supporting its ally in a silly colonial war would make things worse.
Not to mention France and Austria were at least (nominally) allies, so Austria isn't going to attack France. In this period Britain had virtually no allies on the continent; Prussia had recently reneged her treaty with Britain and Russia formed the League of Armed Neutrality to handle shipping.