How can I convince my parents to let me get a guinea pig(or two)?

You could tell them of their promise. Then, you should tell them that guinea pigs are social, and need company, because this is true. Guinea pigs love company, and can get sick and ill without it.

And you could tell them that pets teach responsibility so with two you will be learning even more. You could also make a deal with your parents saying you promise to take care of them to your best ability and if you don't you have to pay them back for all the supplies, or something.

Check out a hedgehog ... you only need one.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.