The Ottoman Empire emerged following the fall of the Roman Empire. After the fall of the western half of the Roman Empire, the eastern half prospered as the new world power. Constantinople was a force to be reckoned with during the reign of Constantine. No other region had the power to threaten Constantinople as a state. None other than the Ottoman Empire. Numerous raids by the Turkcoman Gazis resulted in a general invasion. Osman Gazi attacked Iznik, the ancient Byzantine capital and when the emperor sent an army to confront him, they were ambushed and defeated at Baphaeon. The Ottoman Empire, under Sultan Mehmed the Conqueror, invented the cannon that directly led to the fall of Constantinople, taking the entire Byzantine Empire with it. This was the first step of the Ottoman Empire to become the new world power. Now free from the influence and rule of Constantinople, the Ottoman Empire began the reconstruction of Istanbul, formerly Constantine. Despite all the destruction left by the conquest of Constantinople, the Ottoman Empire prospered as in the beginning....