FILE - In this Tuesday, July 2, 2013 file photo, a woman from a welcoming group wears a shawl with the face of U.S. President Barack Obama, as she prepares for him to depart from the Julius Nyerere airport in Dar es Salaam, Tanzania. Africa was electrified by the rise of Barack Obama, the first U.S. president of African descent, who took aim at the twin scourges of corruption and dictatorship and sent thousands of troops to fight one of the most terrifying disease outbreaks in decades. (AP Photo/Ben Curtis, File)
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