Answer:
The author includes information about the Seminoles history and their situation today because in that way, the reader feels sympathy for the Seminoles and is finally emotionally involved with the text.
Step-by-step explanation:
The truth is a lot of people do not feel "connected" or close to Native Americans' history, and everything that have gone through. Having a newspaper article about one of these groups is not engaging, not at least without some element that creates that bonding. It is important to notice that the author is not telling their whole history, but the misery they have lived.