What is a backstory a. the historical background of a story b. information about the author of a story c. information from a characters past d. the story’s message or lesson?

It's A. The historical backround of a story :)

C. is the answer      pay attention to the word back it means past or came from

Your answer is: ""Being, after some time of entertainment and gifts, dismissed, a while after he came again, and 5 more with him, and they brought again all the tools that were stolen away before, and made way for the coming of their great Sachem, called Massasoyt; who, about 4 or 5 days after, came with the chief of his friends and other attendance, with the aforesaid Squanto."