Buddhism in Japan began teaching devotion to the "Lotus Sutra". Eventually, his disciples formed their own school of Nichiren Buddhism, which includes various sects that have their own interpretations of Nichiren's teachings. Nichiren Buddhism established the foundation of Japanese Buddhism in the thirteenth century. The school is known for its sociopolitical activism and looks to reform society through faith. In the Muromachi period, Zen, particularly the Rinzai school, obtained the help of the Ashikaga shogunate and the Emperor of Japan, and accomplished considerable development. After the Sengoku period of war, Japan was re-united in the Azuchi–Momoyama period. This decreased the power of Buddhism,
Nichiren Buddhism Japan while Tadao Yanaihara described Nichiren as one of the four historical figures he most admired. While various sects and organizations have had a presence in nations outside Japan for over a century, the ongoing expansion of Nichiren Buddhism overseas started in 1960 when Soka Gakkai president Daisaku Ikeda initiated his group's worldwide propagation efforts growing from a few hundred transplanted Japanese to over 3500 families just by 1962. Nichiren Buddhism is now practiced in many countries outside of Japan. In the United States Prebish coined the typology of "two Buddhisms" to delineate the divide between forms of Buddhism that