In recent years, the definite article in the country's name has increasingly been dropped in common usage; i.e., it would be referred to as "Sudan" rather than "the Sudan."
Sudan is one of the world's most bitterly divided countries. Most people in the richer northern region of the country are Muslims, and the rest living in the poorer southern region are mostly non-Muslims. These cultural differences together with other social, economic, and political factors have plunged Sudan into one of the most violent civil wars in modern history.