Nullification, in United States constitutional history, is a legal theory that a state has the right to nullify, or invalidate, any federal law which that state has deemed unconstitutional. So the best answer among the following choices is letter C. Southern senator Calhoun and Hayne argued that Congress could not pass laws that favored one region of the country over another.
Discovery of the concept of zero
The answer is C. the emperor having total control over the lives of the Chinese.
