By relying on their scientists, the Spanish monarchs made a mistake. The treaty with Columbus was signed by the Spanish monarchs in 1492. The Genoese outwit the king. The king later explained that although he believed in the spherical shape of the Earth, he had no idea of its true size. After all, in this matter he listened to the opinion not only of his scientists, but also took into account the reports of Tuscanelli. This can be believed, because he had a reputation as a brilliant scientist of that century. By the time his map appeared in Europe in 1474, none of the leading scientists had doubts about the sphericity of the Earth. And those who believed it understood that Asia should be located on the other side of the Atlantic Ocean. While in Grenada, Columbus decided to try his luck in France. At the same time, Duke Luis Santangel, the closest financial advisor to Ferdinand of Aragon, manages to convince everyone that Spain will regret Columbus' departure. Santangel explained to the queen that if she does not support Columbus, she will be in danger of seeing other kings owning lands that will be discovered by the Genoese.