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The US Open Door Policy was designed to open up the European-made Spheres of Influence in CHINA to US influence and trade.
China (:
Hawaii was annexed , protective tariffs were installed, an open door policy was announced concerning China and the country went on a gold standard. The US also went to war with Spain , but I am not sure that that was a change in policy.
The open door policy (apex)
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Open door policy
In the period before World War 1, the US policy towards China was called The Open Door Policy.
How did the geography of the United States change after the end of its policy of isolationism.
The Open Door Policy was when the US basically protected its trading rights with China during the imperial time period.
One way that the United States secured its trading powers with China was to initiate the Open Door Policy in 1899 and 1900.
japan
the open door policy