In 1492, the major historical document signed by donors of Columbus's voyage was a contract with the Catholic Monarchs, King Ferdinand II and Queen Isabella I of Spain. This agreement, known as the Capitulaciones de Santa Fe, outlined the terms of Columbus's expedition to find a westward route to Asia. It granted Columbus the title of Admiral of the Ocean Sea and a significant share of any newfound wealth or territories. The successful voyage led to European colonization of the Americas, fundamentally altering global trade, culture, and geopolitics, laying the groundwork for centuries of Spanish dominance in the New World and the transatlantic slave trade.