how specific do we have to be in the 'people in history' section?
Try not to go into to much detail about the persons background but more so about what they did. To find how many points you should write about the person, you should look at the amount of marks given, split that number and that is the amount of points you should write on him/her. For example, if there are 20 marks going for the question, you should write 10 points minimum about that person. This rule works in every question in History.