<P> Japan's limited intelligence gathering capability and personnel are focused on China and North Korea, as the nation primarily relies on the American National Security Agency . </P> <P> In addition, because World War II was a global war, diplomatic historians start to focus on Japanese--American relations to understand why Japan had attacked the United States in 1941 . This in turn led diplomatic historians to start to abandon the previous Euro - centric approach in favor of a more global approach . A sign of the changing times was the rise to prominence of such diplomatic historians such as the Japanese historian Chihiro Hosoya, the British historian Ian Nish, and the American historian Akira Iriye, which was the first time that Asian specialists became noted diplomatic historians . The Japanese reading public has a demand for books about American history and sociaty . They read translations of English titles and Japanese scholars who are Americanists have been active in this sphere . </P>

Japan rivals the united states in which of the following categories