Isabella I of Castile (apr 22, 1451 – nov 26, 1504)
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Isabella I, also called Isabella the Catholic, was Queen of Castile from 1474 until her death in 1504, as well as Queen consort of Aragon from 1479 until 1504 by virtue of her marriage to King Ferdinand II of Aragon.
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 and her husband instituted the Spanish Inquisition in 1478 to achieve religious unity by punishing non-Christians, doubters, and heretics; in 1492, Jews who refused conversion were expelled from Spain.
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