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Answer:</h3>
<em>Initiated by the USA in 1899 and 1900, The Open Door policy was a declaration of principles.</em>
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Explanation:</h3>
<em>May I please have brainliest</em>
<em>Hope this helps</em>
<em>(∵°ω°∴)</em>
square sail I'm not 100% sure on that
Federalism, or the dual roles of state and national government, is part of the system of sharing power in government. Within the system of separate powers, however, the framers of the Constitution provided for "national" or "federal" supremacy. This meant that the national government was supreme in regards to many issues in relation to state governments, as enumerated by the Constitution.
