Guiding principles of the US government?

Two books are used to model tectonic plates

For which of the following reasons did the supreme court most likely rule that it could not force the president to act? a. it would diminish the power of the executive branch and increase the power of the judicial branch. b. it would diminish the power of the legislative branch and increase the power of the judicial branch c. it would diminish the power of the judicial branch and increase the power of the executive branch d. it would diminish the power of the judicial branch and increase the power of the legislative branch

In the study of history what is one major difference between a region and a period