Crown of Aragon: (Aragonese: Corona de Aragon), also recognized as Aragon is a sovereign state and Feudal Absolute Constitutional Monarchy located in Southwestern Europe, and centered in Iberia and across the Mediterranean. Most of The Crown lies within the Western Mediterranean. The only recently reformed government during the Spanish Reform Period mostly originating from James The Great of Aragon and spearheaded by his policies had allowed for the centralization of the fairly vast Aragonese Realm brought upon into formation by the great king. The Constitution of The Council of Aragon after its creation by municipal and nobility appointed officials and signed off by James had signified the new state of the Aragonese Spanish ending what may be referred to by latter historians as more of a confederation while following this period of reform raising the argument of legitimacy for Historians to see Aragon more so as an Empire.
Age of Expansion-Rule of James the Great of Aragon (1295-1327)
War of the Sicilian Vespers (1295-1304)
The War of The Sicilian Vespers is regarded as by most scholars as an important moment in Aragonese History and the spark of the beginning of James The Great of Aragon's military career. Starting in 1299 following the failed attempt of a peace treaty between the House of Anjou-ruled Kingdom of Naples and and the House of Barcelona-ruled Kingdom of Sicily, The Crown of Aragon began a campaign in the Southern Italian Peninsula for the reassurance of his brother's rule in Sicily which fell out into a war of which Royal House would dominate the Southern Italian Peninsula. Through great tactics, James was able to lead a siege on Naples ending the war officially in 1304.