The medieval economy underwent a profound transformation, becoming ever more commercialized and monetized. Merchants helped drive that change, moving goods from place to place and profiting on the returns. Today, we meet some of them: an Italian named Francesco Datini, one of the richest men in Europe, and the Cely family of English wool merchants.Support this show by supporting our sponsors! SimpliSafe - Protect your home! Visit SimpliSafe.com/TIDES for a 60-day risk-free trial.