Final answer:
W. E. B. Du Bois and Marcus Garvey are the two key figures in the Pan-African Movement, with Du Bois advocating for civil rights and higher education, and Garvey promoting economic independence and a return to Africa.
Step-by-step explanation:
The two key figures in the Pan-African Movement in the 20th century are W. E. B. Du and Marcus Garvey. Du Bois played a pivotal role by organizing the first Pan-African Congress in 1919 aimed at promoting self-determination for African colonies. His approach to racial equality was through advocacy for social justice and empowerment via higher education and civil rights engagement. On the other hand, Marcus Garvey the founder of the Universal Negro Improvement Association and African Communities League (UNIA-ACL) was influential in promoting Black economic independence and advocating for the return to Africa, making him a symbolic figure of the movement. Both leaders, though differing in methods, laid the groundwork for future civil rights activism and Pan-African internationalism.