Congress had no power to coin money
Congress was unable to impose taxes
No national court system was established to protect the rights of U.S citizens
Congress was unable to regulate interstate and foreign commerce
In order to insulate the courts from POPULAR PASSIONS, the founders ensure that federal judges are APPOINTED FOR LIFE. The principal objective of the life tenure given to federal judges is to insulate them external pressures. The life term provides job security for them and enable them to do what is right under the law, since they do not have to fear that their position will be terminated if they make unpopular decisions.
The answer:
The Normans are an ethnic group that arose from contact between Norse Viking settlers of a region in France
The variety of information is for example:
archaeological find
primary sources, such as video recordings, sound recordings or testimonies of wittnesses
background and context information
linking dependencies and motivations (for example: what was the motivations for the crusades?)
they collect this information to provide a comprehensive account of the events, but they do take into account that any new information could change how we view something.