Concept:An inter-territorial association refers to a political body that united educated Africans from more than one colony in British West Africa.
Explanation:The first such inter-territorial association was the National Congress of British West Africa (NCBWA).
It was organised in 1920 by educated African elites from the Gold Coast, Nigeria, Sierra Leone, and The Gambia.
The NCBWA was led by influential elites, including J.E. Casely-Hayford from the Gold Coast.
It was formed to press for constitutional reforms and greater African participation in colonial governance.
In contrast, the Aborigines' Rights Protection Society (ARPS), formed in 1897, was confined to the Gold Coast and therefore was not inter-territorial.
Answer:B. National Congress of British West Africa (NCBWA)