In tracking the US economy and determining consumer spending levels an item that might be included would be Harry Potter books sold in bookstores. The other examples are costs incurred by businesses in producing goods or services, whereas the books are solely a consumer purchase.
Social hierarchy refers to the social classes found in society, such as lower class, middle class, and higher class. Social hierarchies are still used, but were of extreme importance in the medieval age
The Articles of Confederation created a national government composed of a Congress, which had the power to declare war, appoint military officers, sign treaties, make alliances, appoint foreign ambassadors, and manage relations with Indians.