Final answer:
The Grain Trade with the Powhatans is considered a primary source if it consists of original documents from the time of the English colonists' interactions with the Powhatans. However, specific details from the source are needed to confirm its primary nature. The sentiment towards the Mongols was not addressed in the provided information.
Step-by-step explanation:
When assessing whether a source is a primary or secondary document, one must consider the origin of the information. A primary source is an original document or physical object that was written or created during the time under study. It provides direct or firsthand evidence about an event, object, person, or work of art. In the case of the Grain Trade with the Powhatans, if the information is derived from original accounts from the time when English colonists were trading with the Powhatans, such as letters, records, or firsthand narratives, it would be considered a primary source. On the other hand, a secondary source interprets and analyzes primary sources. These sources are one or more steps removed from the event and may include interpretations made by historians and scholars.
In regard to the sentiment towards the Mongols, the provided information does not include an explicit statement from an author expressing their opinion on whether the world would be better or worse off without the Mongols. To answer such a question, one would need a document that specifically addresses the influence of the Mongols and the opinions of that era or particular author.