§ 2. #Benefits of international trade#. Now, bearing in mind that international trade is carried on by individual traders in any two countries, we may ask what motive impels men to trade across the political boundaries of a state. The simple answer is that each trader has something to give and desires to get something in return. Each is seeking to get something that has to him a greater value than the thing he gives, and believes he can do this in trade with a foreigner better than by trading at home. In any trade, both parties gain, or think they are gaining.[2] In international trade there is the same chance for mistake as in domestic trade, but no more. In a single transaction in either domestic or foreign trade one party may be cheated, but the continuance of trade relations is dependent upon continued benefits. The once generally accepted maxim that the gain of one in trade is the loss of another is now generally rejected, but often still it is assumed to be true of international trade. The starting point for the consideration of this subject is in this proposition: Foreign trade is carried on by individuals, for individual gain, with the same motives and for the same benefits as are found in other trade. The advantages of international trade are indeed but those of division of labor in general, in the particular case where it happens to cross political boundaries. The great territorial divisions of industry are determined first and mainly by natural differences of climate, soil, and material resources. Thus trade arises easily between North and South, between warm and frigid climates, between new countries and old, between regions sparsely and regions densely populated.[3] Territorial divisions of industry are determined secondly by social and economic differences such as those with respect to accumulation of wealth, amount of loanable capital, invention, organization and intelligence of the workers, and the grade of civilization. Foreign trade normally imparts increased efficiency to the productive forces of each country. In most cases it is apparent that labor is more effective and gets a larger product when it is applied in those ways for which the country is best fitted and for which it offers the best and most bountiful materials; and that, further, when special branches of industry have developed at one place, they make possible the advantages of large production and of high specialization.