key ideas. Society does not consist of individuals, but expresses the sum of interrelations, the relations within which these individuals stand. In the Marxian view, human history is like a river. ... This represents the dialectical part of Marx's famous theory of dialectical (or historical) materialism.
I think the answer is A. Security. As America was expanding, people went to the west for more jobs, (opportunity) and more land. Thus, they were more free to do what they wanted.
The answer is: to act as a ceremonial role within the Senate.
The phrase 'Pro Tempore' is a latin language with the meaning of 'for the time being'. President pro tempore of the senate only elected as a ceremonial role when the actual presiding officer of the senates is unable to attend the meeting/conference.