John Tyler
Tyler reportedly recognized the "coming importance of the Asian Pacific region to trade"], and sent a diplomatic mission to China, which successfully established consular and commercial relations between China and the United States, allowing the United States to gain the same trading concessions from China that Britain had.[10] Tyler also applied the Monroe Doctrine to Hawaii, told Britain not to interfere there, and began the process of annexing Hawaii to the United States.[In 1842 the Secretary of State, Daniel Webster, negotiated the Webster-Ashburton Treaty with Britain which concluded where the border between Maine and Canada lay.[10] The issue of where the border lay had caused tension between the United States and Britain for a notable amount of time, and had brought the two countries narrowly to war with each other on several occasions.[ The treaty improved Anglo-American diplomatic relations.However, Tyler was unsuccessful in concluding a treaty with the British to fix the boundaries of Oregon.[Tyler brought the Second Seminole War to an end in 1842, and he also advocated the establishment of a chain of American forts from Council Bluffs, Iowa, to the Pacific.
