It was the result of the marriage between Petronilla of Aragón and RamónBerenguerIV, count of Barcelona in 1137: their son, Alfonso II, was the first king of the crown of Aragón
Alfonso I took Zaragoza
Stopped by the Almoravids and Almohads
Battle of Las Navas de Toloda (1212)
Jaime I the conqueror took the Balearic Islands and Valencia in the 13th century
Incorporation of Sicily, Athens, Neopatras and Naples
Dynastic union and pactismo (the king swear to respect the different Fueros)
Importance of the commercial and artisan activities
