The reason of "开启了文艺复兴时期希腊文化研究的是拜占庭流亡学者" is that Byzantine Empire is the predominantly Greek-speaking continuation of the eastern part of the Roman Empire. Until its fall in 1453 to the Ottoman Empire, its citizens referred their empire as Roman Empire. They consider the western Europe in the Middle Age as under civilized "Barbarian". Following the Fall of Constantinople at the hands of the Ottoman Turksthe, those migrated Greek scholars moved to Italy, and became the major force of The Renaissance. They felt that they have a mission to teach those people, and enlighten that part of world with the Greek civilization, to restore the glorious of the Roman Empire.