The process of objectively evaluating claims, propositions, and conclusions to determine whether they follow logically from the evidence is known as

The process of objectively evaluating claims, propositions, and conclusions to determine whether they follow logically from the evidence is known as: Critical Thinking
In critical thinking, we drive our mind to see the existing evidences that available to us, and tried to linked those evidences to formulate a judgement that would determine whether the claims/propositions is true or false.

What area are in blue

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.