History of Sudan
The modern Republic of Sudan was formed in 1956 and inherited its boundaries from Anglo-Egyptian Sudan, established in 1899. For times predating 1899, usage of the term "Sudan" for the territory of the Republic of Sudan was somewhat anachronistic, and may have referred to the more diffuse concept of the Sudan.
United States aid to Sudan
Since its independence from Britain and Egypt on January 1, 1956, Sudan has experienced two civil wars. The First Sudanese Civil War (1955 to 1972) started around the time of independence and ended when the south was granted autonomy. The Second Sudanese Civil War began in 1983 and lasted 22 years. The signing of the Comprehensive Peace Agreement (CPA) ended the civil war in 2005.