☆Do some further reading and report what you have learned. The following link may be of help.

1. "5 rules you MUST follow if you want to make money from food

http://edition.cnn.com/2015/07/06/business/business-plan-how-to-make-money-from-food/index.html

2. "The U.S. is growing millionaires faster than every country in the world. Except China."

http://www.washingtonpost.com/blogs/thefix/wp/2014/06/10/the-u-s-is-growing-millionaires-faster-than-every-country-in-the-world-except-china/

3. "The millionaire’s club expands" 

http://www.washingtonpost.com/opinions/robert-samuelson-the-millionaires-club-expands/2014/10/22/04fcd128-5a01-11e4-8264-deed989ae9a2_story.html