structural:scholar_edition, stylistic:tone, information:classification, information:extraction
Christian repopulation

The Reconquista was a process not only of war and conquest, but also of repopulation. Christian kings moved their own people to locations abandoned by Muslims in order to have a population capable of defending the borders. The main repopulation areas were the Douro Basin (the northern plateau), the high Ebro valley (La Rioja) and central Catalonia. The repopulation of the Douro Basin took place in two distinct phases. North of the river, between the 9th and 10th centuries, the "pressure" (or presura) system was employed. South of the Douro, in the 10th and 11th centuries, the presura led to the "charters" (forais or fueros). Fueros were used even south of the Central Range.

The presura referred to a group of peasants who crossed the mountains and settled in the abandoned lands of the Douro Basin. Asturian laws promoted this system, for instance granting a peasant all the land he was able to work and defend as his own property. Of course, Asturian and Galician minor nobles and clergymen sent their own expeditions with the peasants they maintained. This led to very feudalised areas, such as Leon and Portugal, whereas Castile, an arid land with vast plains and harsh climate, only attracted peasants with no hope in Biscay. As a consequence, Castile was governed by a single count, but had a largely non-feudal territory with many free peasants. Presuras also appear in Catalonia, when the count of Barcelona ordered the Bishop of Urgell and the count of Gerona to repopulate the plains of Vic.

During the 10th century and onwards, cities and towns gained more importance and power, as commerce reappeared and the population kept growing. Fueros were charters documenting the privileges and usages given to all the people repopulating a town. The fueros provided a means of escape from the feudal system, as fueros were only granted by the monarch. As a result, the town council was dependent on the monarch alone and, in turn, was required to provide auxilium —aid or troops—for their monarch. The military force of the towns became the caballeros villanos. The first fuero was given by count Fernán González to the inhabitants of Castrojeriz in the 940's. The most important towns of medieval Hispania had fueros, or forais. In Navarre, fueros were the main repopulating system. Later on, in the 12th century, Aragon also employed the system; for example, the fuero of Teruel, which was one of the last fueros, in the early 13th century.

From the mid-13th century on, no more charters were granted, as the demographic pressure had disappeared and other means of re-population were created. Fueros remained as city charters until the 18th century in Aragon, Valencia and Catalonia and until the 19th century in Castile and Navarre. Fueros had an immense importance for those living under them, who were prepared to go to war to defend their rights under the charter. In the 19th century, the abolition of the fueros in Navarre would be one of the causes of the Carlist Wars. In Castile, disputes over the system contributed to the war against Charles I (Castilian War of the Communities).