ACCRA, GHANA — At the end of a globetrotting career that took U.S. civil rights pioneer and author W.E.B. Du Bois from his home in America to Germany, the Soviet Union, China, and many other countries, he travelled to Ghana in 1961. Kwame Nkrumah, Ghana’s first president, had invited him to help write the Encyclopedia Africana. Renouncing his U.S. citizenship, Du Bois became a citizen of Ghana and lived there until his death in 1963—he died on the eve of the civil rights march in Washington, D.C., where Dr. Martin Luther King Jr. gave his “I Have a Dream”speech and where Roy Wilkins of the NAACP announced Du Bois’s death from the podium.