Final answer:
The motto 'One God! One Aim! One Destiny!' belongs to the Universal Negro Improvement Association, which was committed to unifying and empowering people of African descent.
Step-by-step explanation:
The motto "One God! One Aim! One Destiny!" is associated with the Universal Negro Improvement Association (UNIA), founded by Marcus Garvey. This organization was established to promote African-American unity and pride and to foster global connections among people of African descent. Contrary to a militant religious organization, the UNIA sought to empower through unity and self-determination.
Although the organization faced challenges and controversy, its motto signifies its commitment to a unified purpose and destiny for African people.