White Nile in the context of "Blue Nile"

The Nile (also known as the Nile River or River Nile) is an important river in Africa that flows northwards into the Mediterranean Sea. At roughly 6,650 km (4,130 mi) long, it is among the longest rivers in the world. Its drainage basin covers eleven countries: the Democratic Republic of the Congo, Tanzania, Burundi, Rwanda, Uganda, Kenya, Ethiopia, Eritrea, South Sudan, Sudan, and Egypt. It plays an important economic role in the economy of these nations, and it is the primary water source for South Sudan, Sudan and Egypt.

The Nile has two major tributaries: the White Nile and the Blue Nile. The White Nile, being the longer, is traditionally considered to be the headwaters, while the Blue Nile actually contributes 80% of the water and silt below the confluence of the two. The White Nile begins at Lake Victoria and flows through Uganda and South Sudan, while the Blue Nile begins at Lake Tana in Ethiopia and flows into Sudan from the southeast. The two rivers meet at the Sudanese capital of Khartoum.

Nubia (/ˈnjuːbiə/, Nobiin: Nobīn, Arabic: النُوبَة, romanized: an-Nūba) is a region along the Nile river encompassing the area between the confluence of the Blue and White Niles (in Khartoum in central Sudan), and the first cataract of the Nile (south of Aswan in southern Egypt) or more strictly, Al Dabbah. It was the seat of one of the earliest civilizations of ancient Africa, the Kerma culture, which lasted from around 2500 BC until its conquest by the New Kingdom of Egypt under Pharaoh Thutmose I around 1500 BC, whose heirs ruled most of Nubia for the next 400 years. Nubia was home to several empires, most prominently the Kingdom of Kush, which conquered Egypt in the eighth century BC during the reign of Piye and ruled the country as its 25th Dynasty.

From the 3rd century BC to 3rd century AD, northern Nubia was invaded and annexed to Egypt, ruled by the Greeks and Romans. This territory was known in the Greco-Roman world as Dodekaschoinos.

Khartoum, also spelled Khartum, is the capital city of Sudan as well as Khartoum State. With an estimated population of 7.1 million people, Greater Khartoum is the largest urban area in Sudan.

Khartoum is located at the confluence of the White Nile – flowing north from Lake Victoria – and the Blue Nile, flowing west from Lake Tana in Ethiopia. Divided by these two parts of the Nile, the Khartoum metropolitan area is a tripartite metropolis consisting of Khartoum proper and linked by bridges to Khartoum North (الخرطوم بحري al-Kharṭūm Baḥrī) and Omdurman (أم درمان Umm Durmān) to the west. The place where the two Niles meet is known as al-Mogran or al-Muqran (المقرن; English: "The Confluence").

Alodia, also known as Alwa (Greek: Αρουα, Aroua; Arabic: علوة, ʿAlwa), was a medieval kingdom in what is now central Sudan. Its capital was the city of Soba, located near modern-day Khartoum at the confluence of the Blue and White Nile rivers.

Founded sometime after the ancient Kingdom of Kush fell, around 350 AD, Alodia is first mentioned in historical records in 569. It was the last of the three Nubian kingdoms to convert to Christianity in 580, following Nobadia and Makuria. It possibly reached its peak during the 9th–12th centuries when records show that it exceeded its northern neighbor, Makuria, with which it maintained close dynastic ties, in size, military power and economic prosperity. Alodia was a large, multicultural state administered by a powerful king and provincial governors appointed by him. The capital Soba, described as a town of "extensive dwellings and churches full of gold and gardens", prospered as a trading hub. Goods arrived from Makuria, the Middle East, western Africa, India and even China. Literacy in both Nubian and Greek flourished.

The Sultanate of Darfur (Arabic: سلطنة دارفور, romanized: Salṭanat Dārfūr) was a pre-colonial state in present-day Sudan. It existed from the 17th century to 24 October 1874, when it fell to the Sudanese warlord Al-Zubayr Rahma Mansur, and was reestablished again from 1898 to 1916, until it was conquered by the British. At its peak in the late 18th and early 19th century it stretched all the way from Darfur in the west to Kordofan and the western banks of the White Nile in the east, giving it the size of present-day Nigeria.

Kerma was the capital city of the Kerma culture, which was founded in present-day Sudan before 3500 BC. Kerma is one of the largest archaeological sites in ancient Nubia. It has produced decades of extensive excavations and research, including thousands of graves and tombs and the residential quarters of the main city surrounding the Western, or Lower, Deffufa.

The locale that is now Kerma was first settled by hunter-gatherers around 8350 BC, during the Mesolithic. Between 5550 BC and 5150 BC, the site was mostly abandoned, possibly due to decreased Nile flow during this time interval. A second hiatus in occupation occurred between 4050 BC and 3450 BC, likely as a result of minimal flow from the White Nile. Around 3000 BC, agriculture developed and a cultural tradition began around Kerma. Kerma later developed into a large urban center that was built around a large adobe temple known as the Western Deffufa, which was built after 1750 BC. A state society formed between 2550 BC and 1550 BC, with a significant decrease in cattle breeding being evidenced by the archaeological record around 1750 BC. Evidence for copper metallurgy appears from c. 2200–2000 BC. As a capital city and location of royal burials, Kerma sheds light on the complex social structure present in this society.