The correct answer is A. The end of the Civil War
Explanation
William Edward Burghardt Du Bois (1868 - 1963) was an afro American politician, sociologist and human rights activist who stood out for his struggle for human rights especially, afro rights. Also he wrote novels, essays, and academic studies, for example his book The Soul Of Black Folk published in 1925, this book tells about how was to be an afro American in the United States after the end of Civil War, or his book Black Reconstruction in America published in 1935 that tells about the role of afro American in the reconstruction of the United States after the Civil War. So, the correct answer is A. The end of the Civil War.
