The rapid growth of Islam influenced both the Eastern Roman Empire and Asia. What are the factors that made the Islamic Empire successful? Why did the Eastern Roman Empire lose it's territories so quickly? What was the result of these lost territories on the Eastern Roman Empire's economy and military strength? What are the pillars of Islam? What is Sharia Law? How did conflict between the Shia and Sunni impact the Islamic empires? When Islam came into contact with India how did each religion view the other and how did each see India's caste system?