Reaserch argument "Travels of a T-shirt in a global market economy?

So for my AP English course we need to do investigate an argument, and I chose the book Travels of a T-shirt …. By Pietra Rivoli. After being to the extent beyond the point of no return can not trade in books, I read this book thoroughly and I can not find a direct central argument to counter any, agree, or qualify. I found many arguments very small, but I guess nothing really central, possibly, free trade is a good of a viable system, but the policy to stop it? I only have a block with this book and anyone who has read or can give me information on what they believe is the argument would help tons. And yes I googled it.

well, as are Vladimir Lenin, I should say that the global market economy is an excuse that Western capitalist imperialism is using to exploit the poor Asian workers in the workshops clandestine.

T-Shirt Travels