My finding - the relationship between the number of products and populations -

When I was at supermarket in Shanghai, I found many foods from Japan and they had more and more tastes!! We can find two or three tastes for one snack in Japan but more than five in China.

I was wondering why China has that much variety of tastes and I noticed because of the large population. 

Japan doesn't have much population so companies cannot make many tastes because companies are not able to sale as much as they want while it costs so much. However, China has large population so they can sale large number of products with many tastes. 

I cannot count people to make sure China has large populations but I feel it at supermarket with the many kind of products they sale at there. 

I thought this is one of good aspect of the large number of population!! 

The larger populations, the larger variety of foods!!!