Sentry Peak

Harry Turtledove

"When Avram became King of Detina, he declared he intended to liberate the blond serfs from their ties to the land. The northern provinces, where most of the serfs lived, would not accept his lordship. The hot north was a land of broad estates, whose noble overlords took the serfs' labor and gave back next to nothing. Those provinces left Detina, choosing Avram's cousin, Grand Duke Geoffrey, as their king in his place."--Jacket.