Japanese religion has traditionally been syncretic in nature, combining elements of Buddhism and Shinto (Shinbutsu-shūgō). Shinto, a polytheistic religion with no book of religious canon, is Japan's native religion. Shinto was one of the traditional grounds for the right to the throne of the Japanese imperial family and was codified as the state religion in 1868 (State Shinto), but was abolished by the American occupation in 1945. Mahayana Buddhism came to Japan in the sixth century and evolved into many different sects. Today, the largest form of Buddhism among Japanese people is the Jōdo Shinshū sect founded by Shinran.