Since the 15th century, in the state of Joseon, things changed with the adoption of Neo-Confucianism as the state religion. Non-Confucian religions were suppressed and Korean shamanism started to be regarded as a backward relic of the past. In the late 19th and 20th century, a series of circumstances, namely the influence of Christian missionaries and the disruption of society caused by modernisation, contributed to a further weakening of Korean shamanism, ultimately paving the way for a significant growth of Christianity.