As with every show, I’ll list any corrections or clarifications here. If there’s anything I’ve overlooked, please contact me by email or in the comments and I’ll edit the notes to reflect the new information.
19:42 – The major river I’m unable to remember is the Yellow River, called Huang He in Chinese. A number of ancient Chinese civilizations, including the Jiahu, arose along this river as early as 7000 BCE.
39:43 – The Code of Hammurabi was written around 1772 BCE. My guess at “two to three thousand years BCE” was a little off here.
41:32 – Iaroslav the Wise was not directly descended from Oleg, as I mistakenly stated. Iaroslav was a descendant of the Rurik dynasty of Varangians; when Oleg took Kiev, he was acting as Prince Regent while waiting for Igor I to come of age, but was not part of the Rurik dynasty by blood – just part of the tradition of rulers of Kievan Rus. I’m honestly not surprised I missed this bit of information first time through.
42:05 – I speculate on the language of Kievan Rus correctly, but thought I’d clarify due to my uncertainty. The language is known as Old East Slavic, and would eventually differentiate into Belarusian, Russian, and Ukrainian, among others.