The Tokugawa Shogunate began to distrust foreign powers in the 1600s after fighting Christian lords, expelled missionaries but allowed Dutch trade. By the early 1800s, declining agriculture, taxes, and famines weakened the Shogunate as new intellectual movements emerged. The United States sought new markets in East Asia in the 1800s and sent Commodore Perry to open trade with Japan in 1853-1854. Perry's displays of naval power and Fillmore's letter demanding trade and provisions convinced the Shogun to sign the Convention of Kanagawa opening ports to the U.S. Political, economic, and social changes contributed to the Shogunate's fall and the restoration of imperial rule under the Meiji government