Why did Secretary of State John Hay issue the Open Door notes?

Secretary of State John Hay issued the Open Door Notes in 1899 to promote equal trading rights for all nations in China and to prevent any one power from monopolizing Chinese trade. This policy aimed to protect American economic interests in China while fostering international cooperation. By advocating for an "open door" approach, Hay sought to maintain China's territorial integrity and sovereignty amidst increasing foreign influence and territorial claims. The notes were a diplomatic response to the growing imperialist competition among Western powers in Asia.