How did kievan rus defeat the teutonic knights?

Kievan Rus did not directly defeat the Teutonic Knights, as they were not contemporaneous. The Teutonic Knights rose to prominence in the early 13th century, after the decline of Kievan Rus. However, the Knights faced significant resistance from various Slavic states, including the Grand Duchy of Lithuania and the Kingdom of Poland, who united against them in battles such as the Battle of Grunwald in 1410. This coalition ultimately led to the weakening of the Teutonic Order's influence in Eastern Europe.