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.
List of heads of state of Sudan
Since independence was proclaimed on 1 January 1956, six individuals (and three multi-member sovereignty councils) have served as head of state of Sudan, currently under the title President of the Republic of the Sudan. Prior to independence, Sudan was governed as a condominium by Egypt and the United Kingdom, under the name Anglo-Egyptian Sudan. As such, executive power was vested in a dyarchy consisting of both countries' heads of state – at the time of independence, the Queen of the United Kingdom (Elizabeth II) and the Egyptian Revolutionary Command Council (headed by Gamal Abdel Nasser). Immediately following independence, the role of head of state was filled by a five-member Sovereignty Council, with rival nationalist factions unable to agree on a single candidate. In November 1958, General Ibrahim Abboud led a military coup d'état, assuming the role of head of state as Chairman of the Supreme Council. Assuming the title of president in 1964, he resigned later that year due to general discontent around the rule of the military regime. Abboud was succeeded by a senior civil servant, Sirr Al-Khatim Al-Khalifa, who served as acting president for 18 days before transferring executive authority to a Committee of Sovereignty.