[填空题]As more and more material from other cultures became available, European scholars came to recognize even greater complexity in mythological traditions. Especially valuable was the evidence provided by ancient Indian and Iranian texts such as the Bhagavad-Gita and the Zend-Avesta. From these sources it became apparent that the character of myths varied widely, not only by geographical region but also by historical period. (46) . He agreed that the relatively simple Greek myth of Persephone reflects the concerns of a basic agricultural community, whereas the more involved and complex myths found later in Homer are the product of a more developed society.
Scholars also attempted to tie various myths of the world together in some way. From the late 18th century through the early 19th century, the comparative study of languages had led to the reconstruction of a hypothetical parent language to account for striking similarities among the various languages of Europe and the N