The U.S.'s open door policy refers to a diplomatic approach in the late 19th and early 20th centuries, where the United States advocated for equal trading rights with China and aimed to prevent other countries from monopolizing Chinese markets.
Related terms
Spheres of influence: In the context of China, this term refers to areas where foreign powers had exclusive control over trade and economic privileges.
Boxer Rebellion: The Boxer Rebellion was a violent uprising in China against foreign influences, including the open door policy, by a secret society called the Society of Righteous and Harmonious Fists.
John Hay: John Hay was the Secretary of State under President McKinley and Roosevelt who played a significant role in formulating and promoting the open door policy towards China.