Yes, I think that identifying the purpose would increase the credibility of the source, so if we understand the "should" here as "would be good if, is recommended" - then this statement is true.
Including the intent of the information in the source will help place the information in a wider context - and often the context is necessary to fully understand the content of a source.
Native Americans settled in different regions of the country.
It gave them more trust in the government
Answer:
The development of social norms, values and the issue of culture provide the framework for human relations at the organizational level. This is so because human relationships, inside and outside an organizational context such as a job or a hierarchical structure, are essentially conditioned by the social and cultural context in which they develop. Thus, personal interactions are in turn determined by what society expects of them, and the ethical and moral norms that it creates to govern human relations. Even in the legal context, many of these conceptions that society itself creates are translated into social norms, passing laws that emanate from the own customs and traditions of a society.
Executive power, The Constitution explicitly assigns the president the power to sign or veto legislation, command the armed forces, ask for the written opinion of their Cabinet, convene or adjourn Congress, grant reprieves and pardons, and receive ambassadors.