Roman empire was one of the strongest and larg empire in west.it remained stable for many years and ruled with full power.Fall of the roman empires was because of many reason-economic and political issues and division of roman empire into east and west part.and one important reason was that king ferdinend was not in favour of charistianity and many people became against him.europe had been indulged in many years war and finally roman empire ended with treaty of westphalia.
Treaty of westphalia was signed in Germani..it gave following edge to the emerging countries
2.freedom of speech
3.establishment of sovereign government and political system
4.downfall of feudal system
5.stable state-nation system