Kerala (Indian Christianity) and Alexandria, among others, whose communities were called Eastern or Oriental Christendom. The Byzantine Empire was one of the peaks in Christian history and Christian civilization. From the 11th to 13th centuries, Latin Christendom rose to the central role of the Western world and Western culture. Outside the Western world, Christianity has had an influence on various cultures, such as in Africa, the Near East, Middle East, Central Asia, East Asia, Southeast Asia, and the Indian subcontinent. Scholars and intellectuals agree Christians in the Middle East have made significant contributions to Arab and Islamic civilization since the introduction of Islam, and they have had a significant impact contributing the culture of the Mashriq, Turkey, and Iran. Eastern Christian scientists and scholars of the medieval Islamic world (particularly Jacobite and Nestorian Christians) contributed to the Arab Islamic civilization during the reign of the Umayyad and the Abbasid, by translating works of Greek philosophers to Syriac and afterwards, to Arabic. They also excelled in philosophy, science, theology, and medicine. Historian Paul Legutko of Stanford University said the Catholic Church is "at the center of the development of the values, ideas, science, laws, and institutions which constitute what we call Western civilization." The Eastern Orthodox Church has played a prominent role in the history and culture of Eastern and Southeastern Europe, the Caucasus, and the Near East. The Oriental Orthodox Churches have played a prominent role in the history and culture of Armenia, Egypt, Turkey, Eritrea, Ethiopia, Sudan and parts of the Middle East and India. Protestants have extensively developed a unique culture that has made major contributions in education, the humanities and sciences, the political and social order, the economy and the arts, and many other fields. Influence on Western culture Christianity played a prominent role in the development of Western civilization, in particular, the Catholic Church and Protestantism. Western culture, throughout most of its history, has been nearly equivalent to Christian culture, and much of the population of the Western hemisphere could broadly be described as cultural Christians. The notion of Europe and the Western world has been intimately connected with the concept of Christianity and Christendom, many even consider Christianity to be the link that created a unified European identity, although some progress originated elsewhere: Renaissance and Romanticism began with the curiosity and passion of the pagan world of old. Although Western culture contained several polytheistic religions