Loyalty to one's country is called Nationalism.
Is it reliable, is it from the same time period of the event, is it written by or made by or the writer of the primary source has seen the event or has witnessed it or it is a autobiography.
Many Chinese people supported the nationalists because they believed the Manchos Dynasty has lost the Mandate of Heaven
Strength: It was a good plan
Weakness: It was never implemented as intended by the author
France use to control Canada. Not anymore I believe as Canada is its own independent nation :)