The presidency of Warren G. Harding began on March 4, 1921, when Warren G. Harding was inaugurated as President of the United States, and ended when he died on August 2, 1923, a span of 881 days. Harding, the 29th United States president, presided over the country in the aftermath of World War I. Harding, the 29th United States president, presided over the country in the aftermath of World War I. He also signed into law several bills designed to address the farm crisis and, along with Secretary of Commerce Herbert Hoover, promoted new technologies like the radio and aviation. Harding's foreign policy was directed by Secretary of State Charles Evan Hughes. Hughes's major foreign policy achievement was the Washington Naval Conference of 1921–1922, in which the world's major naval powers agreed on a naval disarmament program. Harding appointed four Supreme Court justices, all of whom became conservative members of the Taft Court.