Final answer:
This document appears to be a primary source, but it does not state the author's opinion on whether the world would be better or worse off without the Mongols.
Step-by-step explanation:
1. Is this source primary or secondary? How do you know?
This source appears to be a primary source. It is a document written by the author sharing their own experience and thoughts about the Mongols. Primary sources are firsthand accounts and provide direct evidence.
2. Based on this document, did the author believe the world would be better or worse off without the Mongols?
Based on the document, it is unclear whether the author believed the world would be better or worse off without the Mongols. The document does not explicitly state the author's opinion on this matter.