evidence: South Sudan, which gained independence from Sudan in 2011, is the world’s newest country. Home to a diverse array of mainly Nilotic ethnolinguistic groups that settled in the territory in the 15th through 19th centuries, South Sudanese society is heavily dependent on seasonal migration and seasonal fluctuations in precipitation. Modern-day South Sudan was conquered first by Egypt and later ruled jointly by Egyptian-British colonial administrators in the late 19th century. Christian missionaries helped spread the English language and Christianity in the area, leading to significant cultural differences with the northern part of Sudan, where Arabic and Islam are dominant. When Sudan gained its independence in 1956, the southern region received assurances that it would participate fully in the political system. However, the Arab government in Khartoum reneged on its promises, prompting two periods of civil war (1955-1972 and 1983-2005) in which as many as 2.5 million people died -- mostly civilians -- due largely to starvation and drought. The second Sudanese civil war was one of the deadliest since WWII and left southern Sudanese society devastated. [...] etymology: the name derives from Djouba, another name for the Bari people of South Sudan [...] Diplomatic representation from the US chief of mission: Ambassador Michael J. ADLER embassy: Kololo Road adjacent to the EU's compound, Juba mailing address: 4420 Juba Place, Washington DC 20521-4420 telephone: [211] 912-105-188 email address and website: