The United States entered World War II after Japan's December 7, 1941, attack on Pearl Harbor. In early 1942, Roosevelt established the War Production Board to coordinate wartime production, and named Donald Nelson the head of the board. Wallace became a member of the War Production Board and continued to serve as head of the BEW, which was charged with procuring and protecting the natural resources necessary for war production. He struggled to carve out authority for the BEW, clashing with both the State Department and the Reconstruction Finance Corporation (RFC). On May 8, 1942, Wallace delivered what became his best-remembered speech, known for containing the phrase "the Century of the Common Man". He cast World War II as a war between a "free world" and a "slave world," and held that "peace must mean a better standard of living for the common man, not merely in the United States and England, but also in India, Russia, China, and Latin America–not merely in the United Nations, but also in Germany and Italy and Japan". Though some conservatives disliked the speech, it was translated into 20 languages and millions of copies were distributed around the world.