Hello. You have not shown that the source you are referring to is a document showing the geographic and environmental characteristics of Minnesota.
Answer:
The author of the primary source wrote the document for future settlers who had an interest in Minnesota.
Step-by-step explanation:
A primary source is a document about a historic event created at the same time that this historic moment happened. The main intention of this type of source is to allow those who see it to have information without mediation and promoted by those who lived that moment.
In the case of the primary source mentioned above, it is possible to notice that the author had other colonists who might have an interest in Minnesota. Since the document exposes the facilities that Minesota presents, its geography, climate and much more.