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  He named his sister Isabel, in the "Concordia de los Toros de Guisando" in 1468, and was later disinherited when she married the Infante de Aragón.
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  In 1469 Fernando and Isabel got married. Their marriage was not a union of kingdoms, but a dynastic one, both crowns kept their own law, institutions, borders and currency.
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  Isabel self-crowned Queen of Castilla
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  The catholic kings they aggred the concord of Segovia
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  Fernando come into the throne of Aragon when his father died
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  In the middle of a civil war conquest of Granada and this marked the end of the Reconquista.
The catholic monarchs sponsored the descovered of America. - 
  
  The Catholic Monarchs signed the Treaty of Tordesillas with Juan II of Portugal.
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  Isabel I of Castilla dies. Her daugther Juana is still young so Fernando II of Aragón becomes regent os Castilla.
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  Juana os Castilla, Juana "the Mad", suffers from mental illness. His father as regent until his death.
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  King Fernando used his alliance with France as an excuse ti invade the kingdom of Navarra and anex it to Castilla.
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  After Fernando's death, Cardinal Cisneros becomes regent before Juana's son Carlos V became king of Spain.