Sudan and sometimes called North Sudan, is an Arab state in North Africa and the Middle East bordered by Egypt to the north, the Red Sea to the northeast, Eritrea and Ethiopia to the east, South Sudan to the south, the Central African Republic to the southwest, Chad to the west and Libya to the northwest. Internally, the Nile divides the country into eastern and western halves. The population of Sudan is a combination of indigenous inhabitants of the Nile Valley and descendants of migrants from the Arabian Peninsula. The overwhelming majority of the population today adhere to Islam. The people of Sudan have a long history extending from antiquity which is intertwined with the history of Egypt. Sudan suffered seventeen years of civil war during the First Sudanese Civil War (1955_1972) followed by the Second Sudanese Civil War between central government of Northern Sudan and the SPLA/M of Southern Sudan.