How did Persian law influence some legal ideas in the Babylonian Talmud?

Because Babylonia was under Persian rule during the compilation of the Babylonian Talmud, some of its legal concepts reflect the influence of Persian law.1

A significant example of this influence is the principle formulated by the Babylonian rabbi Samuel, which states that "the law of the [Gentile] government is binding" (dina de-malkhuta dina). While Palestinian rabbis had previously complied with imperial taxation decrees only as a matter of de facto necessity, Babylonian teachers rationalized this governmental authority as legitimate de jure (by law). This reorientation encouraged political quietism and submissiveness as a religious doctrine for Jews living under foreign rule.2

In general, when the rabbis adopted alien legal concepts, they did not simply import them; rather, they elaborated upon these ideas until they were fully integrated into the spirit and structure of Jewish law. Outside of these specific monetary and civil matters where state law was recognized, Jews were instructed to conduct their business and family lives according to rabbinic law.32