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
Buddhism in the United States Mahayana, and Vajrayana Buddhism, it does not espouse any particular school or schools of Buddhism. It respects all Buddhist traditions as equal, and encourages unity of Buddhism in thought and practice. It states that a different, American, form of Buddhism is possible, and that the cultural forms attached to the older schools of Buddhism need not necessarily be followed by westerners. Rita M. Gross, a feminist religious scholar, claims that many people converted to Buddhism in the 1960s and '70s as an attempt to combat traditional American values. However, in their conversion, they have created a new form of Buddhism