History of Japan men instead joined forces with Emperor Go-Daigo and overthrew the Kamakura shogunate. Japan nevertheless entered a period of prosperity and population growth starting around 1250. In rural areas, the greater use of iron tools and fertilizer, improved irrigation techniques, and double-cropping increased productivity and rural villages grew. Fewer famines and epidemics allowed cities to grow and commerce to boom. Buddhism, which had been largely a religion of the elites, was brought to the masses by prominent monks, such as Hōnen (1133–1212), who established Pure Land Buddhism in Japan, and Nichiren (1222–82), who founded Nichiren Buddhism. Zen Buddhism spread widely among
Pure Land Buddhism Pure Land Buddhism as an independent sect in Japan known as Jōdo-shū. Today Pure Land is an important form of Buddhism in Japan, China, Korea, and Vietnam. Pure Land schools make up almost 40 percent of Japanese Buddhism practitioners with the most temples, second to Chan schools. These schools were influenced by the thought that humans could no longer understand the dharma by themselves. Contemporary Pure Land traditions see Amitābha expounding the Dharma in his buddha-field (Skt. "buddhakṣetra"), or "pure land", a region offering respite from karmic transmigration. Amitābha's pure land of Sukhāvatī is described in the "Longer Sukhāvatīvyūha Sūtra"