Survey´s purpose is to illustrate why and how the process happened, when the seferades had to move from Spain in the last years of 15th century to the Ottoman Empire and how the authors have discussed this. How the seferades were treated by the Turks and the sultan, how teh Jews taught the people in the empire, to use the new innovations. The different results showed that the ottomans also gave great chances to the Jews and they became a powerful group of the palace in the empire. The results also showed that the authors are divided into two groups, one group defending the sultans act, and the others are not. The main reason for the ottomans to open their doors for the seferades was to take advantage of their konwledge. The reason for the attack by the western authors on the sultan´s decisions, are more complex and needs to be explained. The study´s methodology is qualitative and describes the events chronologically