Sudan

Total population: 41,087,825

% of population living in poverty: 40%

GDP: $92.83 billion

Capital: Khartoum

Largest city: Omdurman

Coasts: 853 km

Major bodies of water: Red sea

Major rivers: Akobo River, Angereb River, Atbarah River, Bahr el Ghazal River, Baro River, Dinder River, Jur River, Kidepo River

Mareb River, Nile, Blue Nile, White Nile, Pibor River, Pongo River, Sobat River, Tekezé River

Bordering countries: Eritrea, Ethiopia, Egypt, Central African Republic, Libya, and Chad 

Largest religion: Islam

Climate: Although Sudan lies within the tropics, the climate ranges from arid in the north to tropical wet-and-dry in the far southwest (date varies with my sources, but Southern Sudan is its own country)

Geographical features: tropical in south; arid desert in north; rainy season varies by region (April to November)

Tens of thousands of people have fled clashes in the oil-rich Abyei region on the border between north and south Sudan, leaving the town almost empty, Medecins Sans Frontieres said Friday. Fighting broke out on Tuesday between fighters from the Misseriya tribe, which supports the government in Khartoum in the north, and the Ngok Dinka people who back the south, which has voted to secede. At least 70 people were killed and two villages razed in two days of clashes north of Abyei, a spokesman for the army in the south said last week.