The period of the enactment of the Open Door Policy was done between 1899 - 1949.
<h3>What was the Open Door Policy?</h3>
This refers to the foreign policy of the United States to call for equal trade and also to protect the trading integrity of China.
Hence, we can see that this American policy was made and pushed by John Kay in order to protect China during the civil war period and was done by the Secretary of State, John Kay.
Read more about open-door policy here:
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stereotypes are a way to "put a label on someone" so therefore is a form of prejudice if you do not know the person
but only if you do not know the person or haven't met them.
putting a label on someone you know is not prejudice
prejudice is pre judging an individual before meeting them
so there are ways that stereotypes can differ from prejudice because <u><em>if you know the person, placing a label on them would not be prejudice.</em></u>