From the conflicts the Greek city states had with Darius I, Alexander the Great’s conquest in the East, to the Muslim capture of the Iberian Peninsula and the subsequent Crusades on the Holy Lands, the West and the East have been at conflict with one another. This conflict has further extended with the arrival of one small beylik on the world map. This beylik grew into the future Ottoman Empire, which would become one of the major threats to Christian Europe for several centuries.