This is actually a really tough topic to dissect, because there are so many possibilities. As others have pointed out, eventually 'British North America' with sufficient representation in parliament (almost a necessity for the life of the state) will become the centre of power in the Empire. What happens next, in this case? You'll find many in London - old school parliamentarians - not too pleased with the capital of the empire moving to, say, Kingston, NY or whatever. The empire might evolve in such a way that we see Britain declaring independence from America, or, if the Americans aren't getting what they want, a second declaration from them.
Plus, the whole issue of slavery will rear its ugly head again eventually.
I'm not convinced that keeping the thirteen colonies will be a major hindrance to the British conquest of India, though; they had interest in India before the Seven Years War, so why would it wane?
Plus, the whole issue of slavery will rear its ugly head again eventually.
I'm not convinced that keeping the thirteen colonies will be a major hindrance to the British conquest of India, though; they had interest in India before the Seven Years War, so why would it wane?