LUANDA, Angola (AP) — Speaking of “our nation’s original sin,” President Joe Biden on Tuesday toured a slavery museum in Angola and inspected shackles and a whip but also addressed Africa’s future, saying Africans will make up one in four people by 2050 and the world’s fate rests in their hands.

Biden is using his third and final day in Angola to showcase the Lobito Corridor railway, where the US and key allies are investing heavily to refurbish 800 miles of train lines in Zambia, Congo, and Angola.

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