Those three provinces have been part of the Castilian Crown the longest, yet continued to assert their own identity.

But since the Castilian crown imposed itself from Madrid in 1716, the two regions have never stopped quarreling.

The succession to the Castilian and Aragonese crowns now fell to Joanna.

Many foreigners hispanicised their names and/or converted to Catholicism to serve the Castilian Crown.

Civil War of the Castilian Crown (1366-1369)

From this point on, all of the northern territories west of Navarre were under the Castilian Crown, which attempted to centralize more and more.

Vespucci organized the fulfillment of Berardi's outstanding contract with the Castilian crown to provide twelve vessels for the Indies.

Nonetheless, its gains in that war were soon eclipsed by Castilian settlement after the union of the Castilian and Leonese crowns.

But since the Castilian Crown imposed itself from Madrid in 1716 and banished Catalan from public life, the two regions have never stopped quarreling.

Also, the Castilian crown needed an alternative to the Portuguese controlled eastern maritime trade route around Africa to India and East Asia.