Lower Nubia is the northernmost part of Nubia, roughly contiguous with the modern Lake Nasser, which submerged the historical region in the 1960s with the construction of the Aswan High Dam. Many ancient Lower Nubian monuments, and all its modern population, were relocated as part of the International Campaign to Save the Monuments of Nubia; Qasr Ibrim is the only major archaeological site which was neither relocated nor submerged. The intensive archaeological work conducted prior to the flooding means that the history of the area is much better known than that of Upper Nubia. Its history is also known from its long relations with Egypt, particularly neighboring Upper Egypt. The region was historically defined as between the historical First and Second Cataracts, which are now both within Lake Nasser. The region was known to Greco-Roman geographers as Triakontaschoinos. It is downstream on the Nile from Upper Nubia. History During the Middle Kingdom ,Lower Nubia was occupied by Egypt. when the Egyptians withdrew during the second Intermediate Period,Lower Nubia seems to have become part of the Upper Nubian Kingdom of Kerma. The New Kingdom occupied all of Nubia and Lower Nubia was especially closely integrated into Egypt, but with the Third Intermediate Period it became the centre of the independent state of Kush based at Napata at some point. Perhaps around 591 BC the capital of Kush was transferred south to Meroe and Lower Nubia became dominated by the Island of Meroe. With the fall of the Meroitic Empire in the fourth century AD the area became home to X-Group, also known as the Ballana culture who were likely the Nobatae. This evolved into the Christian state of Nobatia by the fifth century. Nobatia was merged with the Upper Nubian state of Makuria, but Lower Nubia became steadily more Arabized and Islamicized and eventually became de facto independent as the state of al-Maris. Most of Lower Nubia was formally annexed by Egypt during the Ottoman conquest of 1517, and it has remained a part of Egypt since then, with only the south being Sudan. Language Linguistic evidence indicates that Cushitic languages were spoken in Lower Nubia, an ancient region which straddles present day Southern Egypt and part of Northern Sudan, and that Nilo-Saharan languages were spoken in Upper Nubia to the south (by the peoples of the Kerma culture), with North Eastern Sudanic languages from Upper Nubia later replacing the Cushitic