number 3 talks about what goes on without the British controlling them and how they want to live so it's social. Number 2 is saying that the British completely ignored the colonist ' government so it is political. Number 1 is economic because it talks about war debts and taxes and which relate to money.
I remember that she was interested in how the world would be later on? But I am not for certain. I have a copy of the book but It's just been a while since I read it.