 The legislation regarding Muslims and Jews in Castilian territory varied greatly, becoming more intolerant during the period of great instability and dynastic wars that occurred by the end of the 14th century.Castilian law is particularly difficult to summarize since due to the model of the free Royal Villas mayors and the population of border areas had the right to create their own fueros (law) that varied from one villa to the next.In general, the Castilian model was parallel to the initial model of Islamic Spain.