The mud-hut town of Juba will become a world capital later this year after final results from last month's vote in Southern Sudan yesterday showed that more than 98pc of the ballots cast were for independence.
The results mean that Southern Sudan will become the world's newest country in July.
Sudan President Omar Al-Bashir said he accepted the outcome of the vote.
North and south Sudan fought a decades-long civil war that ended in 2005 with a peace agreement that guaranteed last month's vote. More than two million people died in the war between 1983 and 2005.
The two sides must still negotiate citizenship rights. The US said it was reviewing its designation of Sudan as a sponsor of terrorism after the independence referendum.
Secretary of State Hillary Rodham Clinton commended the Sudan government for accepting the outcome.