Queen of Castile, promoted the unification of Spain. While other European countries were still fighting to take control over trade routes, Isabella I had led Spain in conquering and expansion of the unknown overseas world. Isabella I's predictability allowed her to give Columbus a quiet considerable financial support. No one had ever thought that this decision would set off a wave of maritime colonization throughout Europe! The inexhaustible treasure had been plundered from the New World. The Span’s national purse was full of gold and silver, and its invincible fleets were unscrupulous in the Mediterranean and the Atlantic. Spain, without any doubt, had become the leader of seas, the empire on which the sun never sets! Isabella I, the first great queen in Europe, had made countless decisions in her brilliant life that deeply influenced the development of Europe!