History of Japan describes historical background of Japan, its rulers, contacts of Japan with Western countries, progress of Japan during various rulers, development of its constitution, its foreign policy, its relations with China and U.S.A., its role in the Second World War, and the modern Japan (till 2002). During 19th Century, Japan became the most advanced and powerful nation of Asia and raised the slogan, “Asia for Asians”. It tried to extend its empire to other places of Asia like China, Korea, etc. This annoyed the Western powers and USA, and therefore, they became the worst enemies of Japan. In the Second World War, Japan fought against Britain, France, and USA in alliance with Germany and Italy but did not attack USSR. After the defeat of Italy and Germany, USA forced Japan to surrender by using its atomic power and in the wake of an attack of Russia on Japan. In spite of the defeat, Japan made an astonishing progress and has become one of the most advanced and the richest countries of the world. It has made wonderful progress by peaceful means and hard works; the study of progress of Japan is, therefore, useful for Indian students and Indian people.