More trouble arose between Japan on the one hand and China, Britain and the U.S. over Japan's Twenty-One Demands made on China in 1915. These demands forced China to acknowledge Japanese possession of the former German holdings and its economic dominance of Manchuria, and had the potential of turning China into a puppet state. Washington expressed strongly negative reactions to Japan's rejection of the Open Door Policy. In the Bryan Note issued by Secretary of State William Jennings Bryan on March 13, 1915, the U.S., while affirming Japan's "special interests" in Manchuria, Mongolia and Shandong, expressed concern over further encroachments to Chinese sovereignty.