This is for my AP US History test if you I need a couple paragraphs just so I can get an idea of what to right thanks

How is organizing history by theme different from organizing history by region? a. a historian who organizes history by theme focuses on a specific individual, whereas a historian who organizes history by region focuses on a big idea over an extended length of time. b. a historian who organizes history by theme studies a specific time period, whereas a historian who organizes history by region studies a specific individual from human history. c. a historian who organizes history by theme studies a big idea that occurs over an extended length of time, whereas a historian who organizes history by region focuses on a specific length of time. d. a historian who organizes history by theme studies a big idea that occurs over an extended length of time, whereas a historian who organizes history by region focuses on a specific area of the world.

Mr.jones wants to buy 6 tickets to play .each ticket cost $10. mr jones has $45 in his pocket how much more money does he need for 6 tikets

How do earth’s systems interact with each other?