WHAP Cultural Heavyweights Dar Al-Islam and The Byzantine Empire. The Muslim World and The Byzantine Empire were two of the most powerful and most-linked-together civilizations during the Middle Ages due mostly to their cultural achievements, religious values, and economic activities. The Byzantine Empire and Muslim World had very similar and different cultural achievements due to their very unique styles but also sharing each other’s ideas as well. The Muslim world’s cultural achievements focused more on the development and interaction of cultures while the Byzantine Empire’s cultural achievements revolved more around the ideology of state building and the arts, but although there are some obvious differences between the two civilizations, their cultural achievements were very similar in many ways. Although the two civilizations practiced religions that shared some similarities, they did have religious oppositions as well and differed in many of their beliefs. Contrary to their very different religious values, they had very similar economic structures by trading on the silk roads and having very strong banking systems. The Muslim World and Byzantine Empire do share some similarities when it comes to economic activities and cultural achievements, they vary and contrast greatly when it comes to each of the civilization’s religious values. The Dar Al-Islam and the Byzantine Empire had quite different religious values, although some similarities are prevalent. Both Islam and Christianity, in particular, Eastern Orthodox Christianity are both Abrahamic religions, meaning both of the civilizations emphasize and trace their origins to Abraham and that they are both monotheistic. Another similarity between both Dar Al-Islam and Christianity is that they both believe in God, the Muslims call God “Allah”. A big difference between the two