Things didn't stop happening on the vast grasslands of the Eurasian steppes once the first waves of migrants had departed to make their mark on Europe and beyond. New societies, languages, and ethnic groups emerged. The chariot was invented, and bronze metallurgy spread far and wide. One of those innovative societies on the steppe gave rise to the Indo-Iranians, whose descendants would spread out everywhere from Siberia to Syria.

I wrote a book, and it comes out on July 20! You can preorder (in hard copy, e-book, or audiobook) The Verge: Reformation, Renaissance, and Forty Years that Shook the World here.

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