Final answer:
Early Japanese theatre drew influence from Buddhism and Shintoism. Kabuki changed by incorporating elements of nature and sacred spaces due to the implementation of Shintoism.
Step-by-step explanation:
Early Japanese theatre drew influence from two belief systems or religions: Buddhism and Shintoism. Buddhism was used by Izumo no Okuni to create unique dances, originally used for prayers. Shintoism, the traditional religion of Japan, recognizes spirits known as kami that exist in nature. Kabuki changed due to the implementation of Shintoism by incorporating elements of nature and sacred spaces in its performances.