What three civilizations flourished in 1050?

In 1050, three prominent civilizations included the Byzantine Empire, which was a center of trade and culture in Eastern Europe; the Islamic Caliphates, particularly the Abbasid Caliphate, known for its advancements in science, medicine, and philosophy; and the emerging kingdoms of Western Europe, where feudalism was taking hold and the foundations for future nation-states were being laid. Each of these civilizations contributed significantly to the cultural and intellectual landscape of the medieval world.