Book excerpt: A comprehensive history of the relationship between Africa and the United States Toyin Falola and Raphael Njoku reexamine the history of the relationship between Africa and the United States from the dawn of the trans-Atlantic slave trade to the present. Their broad, interdisciplinary book follows the relationship's evolution, tracking African American emancipation, the rise of African diasporas in the Americas, the Back-to-Africa movement, the founding of Sierra Leone and Liberia, the presence of American missionaries in Africa, the development of blues and jazz music, the presidency of Barack Obama, and more.