do you enjoy chocolate chip cookies?, they were invented in 1938 just by chopping up chocolate bars into cookies
Who invented them?
Ruth Graves Wakefield invented them, she was a Chef, business owner and author. 
OK thats good ,what are they made of?
Mostly just brown and white sugar, with butter, vanilla and then the chocolate chips added in 
So who are the largest exporters?
Chocolate chip cookies originated in the united states
OK ,do you mean to say US are the highest producers of the chocolate bar?