https://www.nytimes.com/interactive/2011/01/09/weekinreview/09sudan-map.html?ref=weekinreview
[Related article at NYT 09Jan11: “A Colonial Curse Comes Up for a Vote”]https://www.nytimes.com/interactive/2011/01/09/weekinreview/09sudan-map.html?ref=weekinreview
[Related article at NYT 09Jan11: “A Colonial Curse Comes Up for a Vote”]