Why was redundancy trade, e. g., trading corn for com and meat for meat, an important part of the Plains trading system?

This redundancy trading was a security mechanism, setting up avenues for exchange in case of local crop failure.

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"globalization has greatly impacted the united states and american citizens. first and foremost, globalization has spread american influence throughout the world. globalization has opened up more markets for the united states, which in effect american companies sell their products worldwide. there has been a rise of multinational corporations and their influence has greatly increased."

the han greatly expands the chinese empire. the han dynasty retains the centralized bureaucracy and unified political system of the qin but adopts and grafts upon this the confucian view that government should be run by educated, ethical men.

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