<span>B. Leaders could communicate over great distances using a government postal service</span>
In post-war Japan, the United States implemented a policy of "rebuilding the nation" The Allies had learned their lesson after WWI, when they were too harsh on the losers.
<span>Many of the business trusts created in the late 1800s were eventually declared illegal primarily because they eliminated competition by forming monopolies.
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A lack of trade with other nations outside East Asia has been a serious cost of industrialization in East Asia.
