The year 1223 marked a pivotal clash between Rus' principalities and Mongol forces at the Kalka River. Across Europe, new reigns began, shaping the unfolding Thirteenth Century.
The year 1223 marked a pivotal clash between Rus' principalities and Mongol forces at the Kalka River. Across Europe, new reigns began, shaping the unfolding Thirteenth Century.