Complex sentence: For a long time the Vyatka region was a strong antagonist of Moscow and its attempts to consolidate all the isolated Russian lands but eventually resistance was broken, and Kotelnich was conquered in 1459 together with many other towns of the region.
Split into simpler sentences: For a long time Vyatka region was a strong antagonist of Moscow and its attempts to consolidate all the isolated Russian lands. Resistance was broken soon, and Kotelnich was conquered in 1459 together with many other towns of the region.