Some historians think the system was introduced when the Aryans, a powerful nomadic tribe, migrated to the Indus Valley around 1500 BC.

一些历史为，这一制度是在公元前 1500 年左右，强大游牧部落利安人迁移到印度河谷时引入。

There's no real evidence that these Aryans ever existed, but that didn't stop romantic thinkers like Johann Gottfried Herder who believed that their myths, along with other things, embodied the simplicity and purity of the German 'volk.'

没有确凿证据表明这些利安人曾经存在，但这并没有阻止浪漫主义思想如约翰·戈特弗里德·赫尔德相信，他们神话以及其他事物体现了德国“人民”和纯粹。

The discovery of Proto-Indo-Europian led some to posit that it was spoken by a group called " Aryans, " whose myths were the basis for all European, Indian, and Southwest-Asian myths — a purported explanation for their similarities.

原始印欧语发现使一些人推测，这种语言是由一个名为“利安人”群体所使用，他们神话是所有欧洲、印度和西南亚神话基础——这被为是它们相似性解释。