It is undeniable that the world at the present has had changed into modern society. Many people think that changing of the world has affected to trading behaviour of humans because people can buy the same products or services anywhere, for many cities are becoming more and more similar production. From my point of view, I think that if people can buy the same goods anywhere in the world, it will offer both positive and negative impacts. In the following paragraph, the reasons to support my opinion will be outlined in the detail.