问题：

What kind of Economic Policy in an Open Economy

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答案：

　International economic policy refers to activities of national governments that affect the movement of trade and factor inputs among nations. Included are not only the obvious measures such as import tariffs and quotas, but also domestic measures such as monetary policy and fiscal policy. Policies that are undertaken to improve the conditions of one sector in a nation tend to have repercussions that spill over into other sectors. Since an economy’s internal (domestic) sector, one cannot designate economic policies as purely domestic or purely foreign. Rather, the effects of economic policy should be viewed as being located on a continuum between two poles—an internal-effects pole and an external-effects pole. Although the Primary impact of an import restriction is on a nation’s trade balance, for example, there are secondary effects on national output, employment, and income. Most economic polices are located between the external and internal poles rather than falling directly on either one.