Sanhedrin 109: Sins of the People of Genesis

[Who's Who: Nachum Ish Gamzu] (He turned dirt into gold, after all!). The generation of the Tower of Bavel - and what they did so wrong that they lost their portion in the World to Come. Namely, what did they do in building that tower?! War? Idolatry? And the people of Sodom, and their terrible behavior that lost them their portion in the World to Come - specifically, how they became so inhospitable. Plus, how far they went in punishing those who were in the least bit charitable.