The United Nations replaced the League of Nations. The League of Nations was a cross-country entity that was composed of many countries in Western Europe and also elsewhere that was supposed to regulate certain aspects of life that were important for all countries on Earth. However, it turned out there were certain key shortcoming of this union of nations, and later the United Nations were developed.
The triangle stopped first at the the West Indies from Africa where most slaves were pulled off board, then sent on to ports such as New Orleans to be sold. In this context, the closest would be A.
