The answer would be thomas jefferson
Obama makes the point that America is powerful because has the potential to constantly reinvent itself. He mentions that America has enough productivity, innovation and capacity to do so. It is also a land which protects the interests of everyone and not narrow interests anymore, and this is path that had to be followed from that moment on.
South Africa, Morocco, and Ghana were now independent.
They lived in the north and didn't rely on slaves for they're income.
