W.E.B. DuBois vs. The Leitch sisters

The following post has two assignments namely;

1.W.E.B. DuBois vs. The Leitch sisters

To what extent was W. 5.8. DuBois’s view of imperialism different from that of the
Leitch sisters? What explains their similarities? Why were their views different?

2.The American Century

“The 20th-Century was the American Century!”—Assess the validity of this statement