First lady Melania Trump's solo swing through Ghana, Malawi, Kenya and Egypt should come as no surprise.

It has become something of a tradition for US first ladies.

In the 1990s, Hillary Clinton met with Nelson Mandela and toured his jail cell on Robben Island. Laura Bush traveled to Africa to visit HIV/AIDS programs. Michelle Obama, who focused more on domestic issues, still made it out to South Africa and Botswana on a solo tour.

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