Answer: The U.S constitution.
Explanation:provided Congress the power to establish post offices.
I believe it is A or B.
Hope this helps
Answer:
In the 1900s, the United States became a world power. It helped win World War I and World War II. It fought the Cold War against communism.
idrk tbh but when i think of natural rights im basically thinking of rights in favor of white people. like the fact that the government was very much in favor of white people back then was the reason people became very upset? just an opinion don't know if that helps..
It was Franklin Delano Roosevelt.