What is a major difference between the united nations and the african union?

A major difference between the United Nations and the African Union is that the United Nations have global influence, while the African Union has influence only on the African continent.

The United Nations are the biggest and most influential organization on the planet. Most of the countries in the world are members of it. It has its own military, laws that have to be practiced by all country members, and pretty much dictates the global politics and economy.

The African Union, on the other hand, only has members form the African continent and its influence is also only in Africa. It has to be said though that the influence that this organization has is not really big, and it doesn't enjoy big authority. Also, it has shown that it has a long way to go in order to be strong organization as it has failed terribly in most of its missions and actions.

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regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.