Astatement, or set of statements, that describes general principles about how variables relate to one another is a

theory                                                                                        

Explanation:

Theory: The term theory is defined as the process through which various aspects of a phenomenon is being defined. It is based on the process of defining various concepts and how one principle is related to that of the other. It generally explains the idea to solve specific problems.

In other words, it is defined as a phenomenon that explains scientifically acceptable principles and is followed by various methods.

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answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

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answer; during stalin"s rule, many mothers told their children that he was the greatest thing to ever happen to russia;