1. The best answer is Great Britain because at that time in 1648, the Thirty Years War is ended and Europeans suffers most because of the casualties, they still stand on their feet for the future of their country
2. By controlling the countries to change it dramatically because at that time, Europe was totally controlled by the catholic church and the nazis made the jewis people out of the country
3. I think it is not possible that they are the same in their constitutional monarchy and laws are one of the factors that is always change in a country
4.I think England is still could become a constitutional monarchy even if without a religion, because laws are not included in religions.