IOTL, the global spread of Protestantism is largely due to the British Empire, either directly or indirectly through the United States. Although other Protestant countries did create overseas colonies (most notably the Dutch), their empires didn't generally involve as much settlement or missionary activity, limiting the spread of their religious beliefs.
So the question is: assuming that England remains Catholic, how does Protestantism fare over the next five hundred years or so? The core Protestant area would be in northern Germany and Scandinavia, surrounded by Catholic countries. Would this are prove cohesive enough to maintain its religious beliefs, or would influence/pressure from the surrounding Catholic world cause the Protestant states to readopt Catholicism at some point? Or, on the other end of the possibility spectrum, would emigration from this area cause Protestantism to spread across the world anyway?
So the question is: assuming that England remains Catholic, how does Protestantism fare over the next five hundred years or so? The core Protestant area would be in northern Germany and Scandinavia, surrounded by Catholic countries. Would this are prove cohesive enough to maintain its religious beliefs, or would influence/pressure from the surrounding Catholic world cause the Protestant states to readopt Catholicism at some point? Or, on the other end of the possibility spectrum, would emigration from this area cause Protestantism to spread across the world anyway?