Japanese new religions are new religious movements established in Japan. In Japanese, they are called shinshūkyō or shinkō shūkyō. Japanese scholars classify all religious organizations founded since the middle of the 19th century as "new religions"; thus, the term refers to a great diversity and number of organizations. Most came into being in the mid-to-late twentieth century and are influenced by much older traditional religions including Buddhism and Shinto. Foreign influences include Christianity, the Bible and the writings of Nostradamus. In the 1860s Japan began to experience great social turmoil and rapid modernization. As social conflicts emerged in this last decade of the Edo period, known as the Bakumatsu period, some new religious movements appeared. Among them were Tenrikyo, Kurozumikyo and Oomoto, sometimes called Nihon Sandai Shinkōshūkyō ("Japan's three large new religions"), which were directly influenced by Shinto (the state religion) and shamanism. The social tension continued to grow during the Meiji period, affecting religious practices and institutions. Conversion from traditional faith was no longer legally forbidden, officials lifted the 250-year ban on Christianity, and missionaries of established Christian churches reentered Japan. The traditional syncreticism between Shinto and Buddhism ended and Shinto became the national religion. Losing the protection of the Japanese government which Buddhism had enjoyed for centuries, Buddhist monks faced radical difficulties in sustaining their institutions, but their activities also became less restrained by governmental policies and restrictions. The Japanese government was very suspicious towards these religious movements and periodically made attempts to suppress them. Government suppression was especially severe during the early 20th century, particularly from the 1930s until the early 1940s, when the growth of Japanese nationalism and State Shinto were closely linked.