Egypt was conquered first by the Persians and named the Satrapy (Province) of Mudriya, and two centuries later by the Greeks and then the Romans. During the latter period, however, the Kushites formed the kingdom of Meroë, which was ruled by a series of legendary Candaces or Queens. Mythically, the Candace of Meroë was able to intimidate Alexander the Great into retreat with a great army of elephants, while historical documents suggest that the Nubians defeated the Roman Emperor Augustus Caesar, resulting in a favorable peace treaty for Meroë. The kingdom of Meroë also defeated the Persians, and later Christian Nubia defeated the invading Arab armies on three different occasions resulting in the 600 year peace treaty of Baqt, the longest lasting treaty in history. The fall of the kingdom of Christian Nubia occurred in the early 1500s resulting in full Islamization and reunification with Egypt under the Ottoman Empire, the Muhammad Ali dynasty, and British colonial rule. After the 1956 independence of Sudan from Egypt, Nubia and the Nubian people became divided between Southern Egypt and Northern Sudan.