Final answer:
The Universal Negro Improvement Association (UNIA) advocated for black nationalism, Pan-Africanism, black economic independence, and cultural pride.
Step-by-step explanation:
The organization that advocated for black nationalism and Pan-Africanism, pushing for black economic independence and cultural pride, is the Universal Negro Improvement Association (UNIA). Founded by Marcus Garvey in 1914, the UNIA aimed to promote racial pride and develop black-owned businesses, with the goal of achieving black economic and political independence. Garvey's Pan-African vision sought to unite people of African descent worldwide and empower them to create a separate society from whites.