What best explains how trade enhances efficiency

Trade gets productive resources from one place to another where they're more needed.

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Trade gets productive resources from one place to another where they're more needed.

Explanation:

Trade is defined in economics field as the buying and selling of good and services with the exchange of them between parties. It can take place between buyers and sellers, producers and consumers, etc. International or interstate trades allows their economics to expand markets that or else may not have been accessible to it. Global trade permits affluent countries to use their resources more efficiently in order to sell it cheaper than in the country that do not have them and like this obtaining more benefits.  

an aneroid barometer is different from a mercury barometer in that it provides readings that increase as air pressure increases.

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swahili is an extremely rich and complex civilization, a set of ethnic groups articulated by a language and a series of cultural elements that fuse the african traditions, islam and indian culture. this growth was largely a result of the indian ocean trading network that brought in not just man-made riches, but also religious ideas, specifically islam, which had a significant impact on the local culture. furthermore, the development of the swahili language gave a common cultural unity to the people.