Why did Isabella and Ferdinated expel Jews and Muslims from Spain?

Isabella and Ferdinand expelled Jews and Muslims from Spain primarily to unify the country under a single Catholic identity following the Reconquista. They believed that religious homogeneity would strengthen their rule and eliminate perceived threats to their authority. Additionally, there were economic motives, as confiscating the properties of expelled Jews and Muslims provided financial benefits to the crown. This expulsion was part of a broader effort to enforce religious conformity and consolidate their power.