In the first ever episode of the first ever series of Countries That Don't Exist Anymore, we look at the Medieval Anglo-Saxon kingdom of Mercia - from its founding by little Ickle to its eventual stomping on by the Vikings and absorption into Wessex. Find out which Mercian kings made the Top Ten, who King Offa was and why he seemed so keen on Allah and how much wergeld a werewolf was worth.

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Full episode transcript here.

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