Italian explorer Christopher Columbus led four Spanish-based transatlantic maritime expeditions to the Americas. These voyages to America led to the widespread knowledge of its existence. This breakthrough inaugurated the period known as the Age of Discovery, which saw the colonization of the Americas, a related biological exchange, and trans-Atlantic trade.
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Columbus also requested he be made \”Great Admiral of the Ocean Sea\”, appointed governor of any and all lands he discovered, and be given one-tenth of all revenue from those lands. The king submitted the proposal to his experts, who rejected it after several years. It was their considered opinion that Columbus’s estimation of a travel distance of 2,400 miles was far too short. With an eastern sea route now under its control, Portugal was no longer interested in trailblazing a western trade route toAsia crossing unknown seas. In May 1489, the queen sent him another letter ordering all cities and towns under their domain to provide him with food and lodging at no cost. Isabella I of Castile and King Ferdinand II of Aragon conquered the Moorish kingdom of Granada, which had been providing Castile with African goods through tribute, and he presented his plans to the Catholic Monarchs of Spain. The monarchs decided not to support the proposed venture and perhaps keep their options open to keep Columbus from taking his ideas elsewhere. In April 1486, Columbus traveled to Castile to convince the monarchs of Spain to finance the expedition. He referred to these to a committee, which referred these to Sheabella, who referred to him as the “Great Admiral’s Committee” In 1490, the committee decided that Columbus had underestimated the distance to Asia and he was not to go to Asia. The next year, the king gave him an allowance, totaling about 14,000 maravedis for the annual salary of a sailor.
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