Answer:
In 1862, Congress passed the Pacific Railway Act, which authorized the construction of a transcontinental railroad. Four of the five transcontinental railroads were built with assistance from the federal government through land grants.
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<span>When Thomas Friedman referred to the world as being "flat," he was
</span><span>referring to the global economy, the fact that people in one nation can now exchange goods and services with those in another nation—including jobs.</span><span>
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The open door policy was principles that was installed in 1899 and then the 1900s to Have a protection of equal or even trading among countries