at the beginning of the book the 2nd and third paragraphs speak about andrew jackson and simon flinch and how they did...such and such.how does this relate to the previous paragraph
This has to do with Scout's childlike view of cause and effect. Children often ponder how and why things happen in their own special way; it is a way that adults often overlook when caught up in their own problems. The role of Simon Finch and Andrew Jackson serve to give context to Scout's world in the Southern United States. She sees the two as loosely defining an identity that she has had no control over, "If General Jackson hadn't run the Creeks up the creek, Simon Finch would never have paddled up to Alabama, and where would we be if he hadn't? "
Scout is using Andrew Jackson as an example of blaming past events. Cause and effect of you will. Jem wouldn't have broken his arm if Dill hadn't come into their lives, Dill couldn't have come into their lives if Simon Finch hadn't come to the South, and Simon would never have come to the South if Andrew Jackson hadn't driven out the Creeks (A Native American Tribe).
To Kill a Mockingbird
