Why is it useful for historians to base certain studies on the analysis of geographic regions?

Which best describes how president kennedy apples to the audiences at the beginning of his speech?

Which statement best explains why a supreme court opinion is a seminal document? an opinion can become quite lengthy, which makes it a seminal document. supreme court documents are the only seminal documents in the united states. an opinion may create major changes in the laws or policies of the united states. generally speaking, a supreme court opinion reflects the feelings of all americans.

What role does an american citizen play in its own government ?