Answer:
the 15th amendment prohibited the denial of voting rights based on race.
The primary goal of the United Nations is to promote peace and unity among nations, and by this to prevent World Wars ( and other wars) in the future. The UN establishes and helps maintain friendly relations between countries.
Another aim of the UN is to protect human rights worldwide.
Answer:
Offering you an educated guess I would say B is the best choice Answer for your question.