Final Answer:
First Pan-African Wave: W.E.B. Du Bois and the First Pan-African Congress.
Second Pan-African Wave: Kwame Nkrumah and the All-African Peoples' Conference.
Third Pan-African Wave: Thabo Mbeki and the New Partnership for Africa's Development (NEPAD).
Step-by-step explanation:
First Pan-African Wave: W.E.B. Du Bois and the First Pan-African Congress
W.E.B. Du Bois was a prominent African-American intellectual and civil rights activist.
The First Pan-African Congress was held in 1919 in Paris and was organized by Du Bois. It aimed to address issues facing people of African descent globally.
Second Pan-African Wave: Kwame Nkrumah and the All-African Peoples' Conference
Kwame Nkrumah was the first Prime Minister and President of Ghana, a key figure in the decolonization of Africa.
The All-African Peoples' Conference, held in 1958 in Accra, Ghana, was convened by Nkrumah. It brought together leaders to discuss strategies for independence and unity.
Third Pan-African Wave: Thabo Mbeki and the New Partnership for Africa's Development (NEPAD)
Thabo Mbeki served as the President of South Africa and played a role in promoting African development.
NEPAD, launched in 2001, is a socio-economic development framework for Africa, addressing issues like poverty, governance, and infrastructure.