Greek contributions to Islamic world scholarship throughout the Hellenistic world, and Greek mathematics merged with Egyptian and Babylonian mathematics to give rise to a Hellenistic mathematics. The most important centre of learning during this period was Alexandria in Egypt, which attracted scholars from across the Hellenistic world, mostly Greek and Egyptian, but also Jewish, Persian, Phoenician scholars. Most of the mathematical texts written in Greek have been found in Greece, Egypt, Asia Minor, Mesopotamia, and Sicily. Byzantine science was essentially classical science. Therefore, Byzantine science was in every period closely connected with ancient-pagan philosophy, and metaphysics. Despite some opposition to pagan learning, many of the
Economy of East Asia known today as China, Japan, and Korea. These three ancient states traded an abundance of raw materials and high-quality manufactured goods, exchanged cultural ideas and practices, and had military conflicts with each other throughout the centuries. For much of East Asia's history, China was the largest and most advanced economy in the region and globally as a whole. During the first half of the Middle Ages, China was the most developed state in East Asia. The history of trade in East Asia was largely shaped by the history of trade within Ancient China. Ancient China had economic contacts with Persia