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
Faith in Buddhism in their own efforts to make merits as an energy to create the Pure Land from, inspiring the devotee to follow this example. On the other hand, it was taught that practitioners should solely rely on their devotion to the Buddhas in the Pure Land, in particular Amitābha, who would come to their rescue. In Japanese Pure Land Buddhism, the latter ideal became prevalent. But even in Japan, there was much debate as to what emphasis to give to the efforts of the devotee on the one hand, and the reliance on Amitābha Buddha and his vow on the other