In 1469, Isabella of Castile married Ferdinand II of Aragon, thus uniting almost all the Christian dominions of Spain under one monarchy.

CNN: Sunday,

In 1508, the League of Cambrai was formed by Pope Julius II, Holy Roman Emperor Maximilian I, Louis XII of France and Ferdinand II of Aragon to attack Venice.

CNN: Tuesday,

The core of today's Spain first came together as a political entity in 1469 when the marriage of Isabella and Ferdinand united the two houses of Castile and Aragon.

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