When the United States felt its commercial interests in China threatened U.S. Secretary of State John Hay sent notes to the major powers (France, Germany, Britain, Italy, Japan, and Russia), asking them to declare formally that they would uphold Chinese territorial and administrative integrity and would not interfere with the free use of the treaty ports within their spheres of influence in China.
The Treaty nullified the Clayton-Bulwer Treaty of 1850 and gave the United States the right to create and control a canal across the Central American isthmus to connect the Pacific Ocean and the Atlantic Ocean.
The Hay–Bunau-Varilla Treaty established the Panama Canal Zone and the subsequent construction of the Panama Canal.
Intervene before they intervene
The Algeciras Conference's purpose was to find a solution to the First Moroccan Crisis between France and Germany, which arose as Germany attempted to prevent France from establishing a protectorate over Morocco in what was known as the Tangier Crisis.
The Gentlemen's Agreement was an informal agreement between the United States and the Empire of Japan whereby the U.S. would not impose restriction on Japanese immigration, and Japan would not allow further emigration to the U.S. The goal was to reduce tensions between the two powerful Pacific nations.
The Root–Takahira Agreement was an agreement between the United States and the Empire of Japan negotiated between United States Secretary of State Elihu Root and Japanese Ambassador to the United States Takahira Kogorō. The agreement consisted of an official recognition of the territorial status quo as of November 1908, affirmation of the independence and territorial integrity of China, maintenance of free trade and equal commercial opportunities, Japanese recognition of the American annexation of the Kingdom of Hawaii and the Philippines and American recognition of Japan's position in northeast China.