For 10 points, name this Spanish queen who united the thrones of Castile and Aragon by marrying Ferdinand I.
Antonio de Nebrija famously presented his completed grammar book to this ruler. This ruler's predecessor was a half-brother named Henry IV, who continuously tried to arrange political marriages for this ruler. This ruler expelled all Jews with the Alhambra Decree, weakening her country's economy. She was succeeded by her daughter, Joanna the Mad, who began Hapsburg control of Spain by marrying Philip the Handsome. She and her husband began the Inquisition and sent Columbus to the New World. For 10 points, name this Spanish queen who united the thrones of Castile and Aragon by marrying Ferdinand I.
Antonio de Nebrija famously presented his completed grammar book to this ruler.
Isabella I of Castile [accept Isabel; prompt on Isabella] &lt;DG&gt;