In which way did the spanish inquisition help queen isabella and king ferdinand unify Spain?

 In terms of accomplishments, Isabella I unified Spain through her marriage to Ferdinand II of Aragon, and she financed the expedition of Christopher Columbus, leading to the discovery of the Americas. She also completed the Reconquista but infamously expelled Jews and Muslims and empowered the Spanish Inquisition.

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cuban communists pressured the soviet union to place missiles in cuba.