Analysis of information sources in references of the Wikipedia article "Vương quyền Aragón" in Vietnamese language version.
This group of states comprised the kingdoms of Aragon, Valencia, and Majorca, the principality of Catalonia, and the counties of Roussillon and Cerdagne; further afield it embraced the kingdoms of Sicily and Sardinia. These states had no common institutions or bonds save allegiance to a common sovereign
The new kingdom of Castile had roughly tripled in size to some 335,000 square kilometers by 1300 but, at the same time, its population had increased by the same factor, from one to three millions [...] In the new Crown of Aragon of 120,000 square kilometers the population density would have been about the same for its numbers reached about 1,000,000 in the same period.
