Read the excerpt from warriors don't cry.

just before the court hearing where governor faubus would be called to account, the nine of us were summoned to mrs. bates's house to meet with the press. nothing had changed since our last meeting. the troops were still in place around the school, and every morning the crowd of segregationists grew larger. governor faubus was still predicting violence.

several very dignified and important-looking men sat in her living room. one was the naacp attorney, wiley branton. i recognized another man whose picture i'd seen in the newspapers: the famous lawyer thurgood marshall, the man who had delivered the argument that resulted in the supreme court's 1954 school integration ruling.

what is the author’s purpose for including these details?

to entertain readers with related stories
to entertain readers with colorful descriptions
to inform readers about historical context
to inform readers about her town’s violent past