Second person is a point of view (how a story is told) where the narrator tells the story to another character using the word 'you. ' The author could be talking to the audience, which we could tell by the use of 'you,' 'you're,' and 'your.
In number 12 (up neatly) is a prep phrase
I preferably think that background research helps identify many things such as history, records, events, and more which indicates how it relates to the topic