Task: Text Categorization
Input (English): He negotiated the Burlingame Treaty with Anson Burlingame, ensuring most favored nation status between the U.S. and China. By allying himself with Thurlow Weed he was able to gain the support of the newly formed Whig party and soon gained the governorship of New York from 1839 to 1843. While recovering from a carriage accident, he was stabbed in the neck by Lewis Powell the same night his boss was killed. FTP, identify this man, Lincoln's Secretary of State, best known for his purchase of Alaska.
Output (English): History