Question: What river divides the country which was home to Anerastia?

Context paragraphs:
University (neighborhood), Minneapolis: University is a neighborhood within the greater University community in Minneapolis, Minnesota.  It is almost completely occupied by the Minneapolis campus of the University of Minnesota, hence the name.  The Mississippi River divides it into two, making it the only official neighborhood in Minneapolis that occupies both sides of the river.  On the west bank, the neighborhood is bound by 1st Street on the north, 19th Avenue on the west, 4th Street on the south, and the river to the east.  On the east bank, it is bound by the river to the west and south and Oak Street to the east; the northern boundary, going from west to east, is along 11th Avenue, University Avenue, 15th Avenue, and the railroad tracks near 8th Street.

Saint Charles River: The Saint Charles River (French: Rivière Saint-Charles ) is a branch of the Saint Lawrence River that starts in Salaberry-de-Valleyfield, Quebec.  The river divides the Grande-Île and the Island of Salaberry, which are located approximately 50km east of Montreal.  The river is 8km long, and drops 24m over its course from Lake Saint Francis east to Lake Saint-Louis.

River Blackwater (Northern Ireland): The River Blackwater or Ulster Blackwater is a river in County Armagh and County Tyrone, Northern Ireland.  It also forms part of the border between the United Kingdom and the Republic of Ireland, flowing between counties Tyrone and Monaghan, intersecting into Monaghan briefly.  Its source is to the north of Fivemiletown, County Tyrone.  The river divides County Armagh from County Tyrone and also divides County Tyrone from County Monaghan.

Demerara River: The Demerara River is a river in eastern Guyana that rises in the central rainforests of the country and flows to the north for 346 kilometres until it reaches the Atlantic Ocean.  Georgetown, Guyana's largest seaport and capital, is situated on the east bank of the river's mouth.  The river divides Essequibo Islands-West Demerara (Region 3) on the west bank from Demerara-Mahaica (Region 4) to the east.  The Demerara's estuary is narrow and the flowrate is rapid.  This scouring action maintains a 5-to-6-metre-deep direct channel to the ocean.  The river's deep brown color is primarily the result of the massive quantities of silt carried from upriver by the powerful currents.  So powerful are these currents, that the ocean retains the Demerara's brown color for a considerable distance out to sea.

Anerastia: Anerastia is a genus of snout moths.  It was described by Hübner, in 1825, and is known from Egypt, Sudan.

Quri Chay: The Quri River or Quru Chay or Quri Chay (Azerbaijani: "Quru Çay قورو چای" , Persian: قورو چای‎ ‎ ) is a river in East Azerbaijan province of Iran.  It arises in the mountains east of Tabriz and joins the Aji Chay just northeast of central Tabriz.  The river divides Tabriz into northern and southern parts which are connected to each other by several bridges.  The two Ghari Bridges, beside each other, are the most famous and historic of the bridges over the river.  The Sangi Bridge is also of historic interest.

Gatelawbridge: Gatelawbridge is a hamlet in the region of Dumfries and Galloway, Scotland.  It is situated two and a half miles east of Thornhill and near the gorge Crichope Linn.  The origin of the name is unknown though in the past the locals called it Gateley Bridge, so perhaps it takes its name from a type of bridge over the Cample River in the centre of the settlement.  The river divides the parishes, with all those east of the river being in Closeburn Parish, and those west of the river being in Morton Parish.

Jehangira: Jehangira (Urdu: جہانگیرا‎ ) is a town in the Khyber-Pakhtunkhwa province in north-western Pakistan.  It is situated on the banks of River Kabul before its convergence with Indus River near Attock.  The river divides Jehangira into two union councils and districts.  Eastern Jehangira is under Swabi district while western Jehangira is under the administration of Nowshera District district.

Sudan: The Sudan or Sudan ( , ; Arabic: السودان‎ ‎ "as-Sūdān") also known as North Sudan since South Sudan's independence and officially the Republic of the Sudan (Arabic: جمهورية السودان‎ ‎ "Jumhūriyyat as-Sūdān"), is a country in Northern Africa.  It is bordered by Egypt to the north, the Red Sea, 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.  It is the third largest country in Africa.  The River Nile divides the country into eastern and western halves.  Before the Sudanese Civil War, South Sudan was part of Sudan, but it became independent in 2011.  Its predominant religion is Islam.

River Loughor: The River Loughor ( ) (Welsh: "Afon Llwchwr" ) in Carmarthenshire, Wales has its source at an underground lake at the Black Mountain and emerges at the surface from Llygad Llwchwr which translates from the Welsh as "eye of the Loughor".  It flows past Ammanford and Hendy in Carmarthenshire and Pontarddulais in Swansea.  The river divides Carmarthenshire from Swansea for much of its course and it separates Hendy from Pontarddulais at the point where the river becomes tidal.  The Loughor meets the sea at its estuary near the town of Loughor where it separates the south coast of Carmarthenshire from the north coast of the Gower Peninsula.  Among its tributaries is the River Amman, which joins the Loughor near Pantyffynnon.  The area of the catchment is some 262 km (101 sq Miles).

Supporting paragraphs: Anerastia Sudan
Answer: The River Nile