As you said , global trade is an exchange of capital , goods and service . Admittedly , global trade benefit**s** the world in vairous parts . howerver, we can not ignore the side effects brought in by international trade.**That is to say, it does not make everyone better off .**
To begin with , countries with lower stage of industrial development have been suffering from international trade as cutting trade barriers and opening markets do not gurantee development .**On** the one hand,global trade is dominated by developed countr**ies** ,**which immensely enlarges the income discrepancy**. The UN Development Program reports that the richest 20 percent of the world's population consume 86 percent of the world's resources . What's worse, wto , aim to end the unfair practice, have actually accelerated these trends by exposing cheap labor force and vast, unexploited natural ressources to foreign investment ,**which is never a fair win-win cooperation.**
On the other hand , frequent collaboration will limite the expansion of certain industries and reduce economic stability . The more countr**ies** depend on others ,the deeplier they would be trapped in economic crisis,**or even the cooperated countries are not going to be spared** .For instance , the financial crisis in 2008 which is the biggest economic problem since the world war 2 , was due to the close trade-relationship between the countries .
On the contrary , opinion polls, including a careful study by Stanley Greenberg and his associates for the Roosevelt Institut,**illustrate that Americans and Europeans stand the almost propotion of dissatisfaction brought by trade** . That is to say , people in the developed country are surfering from global trade .
Statistics suggests that for a large segment of population,it does not allow promotion of income . For exemple ,in the US, the bottom 90% has endured income stagnation for a third of a century. Median income for full-time male workers is actually lower in real (inflation-adjusted) terms than it was 42 years ago. At the bottom, real wages are comparable to their level 60 years ago .
Besides ,The effects of the economic pain and dislocation that many Americans are experiencing are even showing up in health statistics. The economists Anne Case and Angus Deaton, the Nobel laureate, have elucidated that life expectancy among segments of white Americans is declining. Things are a little better in Europe – but only a little better as the unemployement and the impact of foreign on domestic good**s** still invite headache . for instance , in the automotive market , the decrease of tariffs augment**s** the import of cars in Korea ，which shrank 7.2 percent in the first nine months in European car market .
Additionally ,as you mentioned , global trade establish**s** new industry , while it also leads to inevitable problems , such as the diffusion of pollution . The report indicates that global trade causes more than 20% of premature air pollution deaths .**Imagine that thousands of people are killed a year because of the pollution emerged by production of goods around the world !** Aside from this，the destruction of biodiversity is not a negligible issue. As international trade chains accelerate the degradation of habitat removed far from the place of consumption , we found that 30% of global species threats arise from it . In particular, consumers in developed countries cause threats to species through their demand of commodities ultimately produced in developing countries .
Last but not the least ,**although** global trade develops the collaboration and exchange among countries ,it does breed transnational crime as well.**For example**, smuggling and drug tracfficking**,which strongly threatens** the situation of the world .
In conlusiton , global trade is a double-edged sword with risk ,danger and sacrifice . We should take it with fully precaution .