Teddy Roosevelt and William Taft both busted trusts and big business. This was a big turn around from the laissez faire styled economy before it in the gilded age
The correct answer to this open question is the following.
Although the question is incomplete because it does not provide a specific reference about the author of the letter or any other reference, we can comment on the following.
A primary source is the piece of information that was written by a character or an individual that lived in the moment of the event, was part of the event, or witnessed the event. This individual could have written a letter, or a document -including a book. Or he/she took a photograph. Or was part of an interview. The secondary source includes information from a third person who was not part of the time or event but has found information through other resources. It is the case of an encyclopedia or researchers/historian books.
The medieval guilds were generally one of two types: merchant guilds or craft guilds. Merchant guilds were associations of all or most of the merchants in a particular town or city; these men might be local or long-distance traders, wholesale or retail sellers, and might deal in various categories of goods.
