B.They introduced the idea that each nation had its own unique abilities.
Answer: W.E.B. Du Bois
Explanation: William Edward Burghardt Du Bois was an American sociologist, socialist, historian, civil rights activist, Pan-Africanist, author, writer and editor. He rose to national prominence as the leader of the Niagara Movement, which is a group of African-American activists who wanted equal rights for blacks.
He fervently protested against racism, lynching as well as discrimination when it comes to education and employment. His activism was about people of color everywhere, particularly Africans and Asians. He was a proponent of Pan-Africanism and helped organize several Pan-African Congresses to fight for the independence of African colonies from European powers.
Decreases or becomes less.
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group of states including the southeastern.
