![The Open Door Policy and the Boxer War: The US and China | AP US History Study Guide from The Gilder Lehrman Institute of American History The Open Door Policy and the Boxer War: The US and China | AP US History Study Guide from The Gilder Lehrman Institute of American History](https://www.gilderlehrman.org/sites/default/files/imagecache/inline-2col-float/essay-images/3c37101u.cr_.web_.jpg)
The Open Door Policy and the Boxer War: The US and China | AP US History Study Guide from The Gilder Lehrman Institute of American History
![Amazon.com: Cartoon Open Door C1900 Namerican Cartoon Depicting Uncle Sam Propping The Open Door Policy With China With The Brick Of US Army And Navy Prestige As The Colonial Powers Of France Amazon.com: Cartoon Open Door C1900 Namerican Cartoon Depicting Uncle Sam Propping The Open Door Policy With China With The Brick Of US Army And Navy Prestige As The Colonial Powers Of France](https://m.media-amazon.com/images/I/81HaCi45JaL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Cartoon Open Door C1900 Namerican Cartoon Depicting Uncle Sam Propping The Open Door Policy With China With The Brick Of US Army And Navy Prestige As The Colonial Powers Of France
![John Hay's Open Door Policy set the cornerstone of US foreign affairs and promoted free trade and state integrity in China John Hay's Open Door Policy set the cornerstone of US foreign affairs and promoted free trade and state integrity in China](https://www.thevintagenews.com/wp-content/uploads/sites/65/2017/02/BeFunky-Collage-1.jpg)