Kiddushin 72a Amud Yomi Shiur
[BS"D] The Halachic Geography of Ancient Babylonia. Amongst all centers of Jewish Diaspora, Bavel (Babylonia) was the place inhabited by Jews of purest yichus. The Gemara clarifies what are the exact borders of that "Yichus-land". Although it is known that Bavel is located between the Euphrates & Tigris rivers, there are still some questionable [...]