The situation changed in the current world economy Many countries pay attention to the economic problems are more. Does not limit the scope, but only within their countries ' economic systems only. But trying to learn other countries ' economies that succeed in economic development to become masters in their country's economic development. In addition, in the current era, Earth is the relationship between the countries. Specifically, trade has become extremely progressive. With the light-fast communication to various countries. Have the opportunity to contact the trade between countries with different economic systems. Economic and social activity in the country, one of the countries which may have an effect on both direct and indirect, against other countries. The current technological progress tends to narrow the world impact of economic policies and trade even more serious. Competition in the world today has changed from race to race and a war weapon trade. Therefore, understanding the economy, it is important and very necessary to study such a relationship in detail.
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