Complex sentence: They developed the chariot, cavalry, and horse archery, introducing innovations such as the bridle, bit, and stirrup, and often appear in history as invaders of Europe, Anatolia, and China.
Split into simpler sentences: They developed the chariot, cavalry, and horse archery, introducing innovations such as the bridle, bit, and stirrup. They often appear in history as invaders of Europe, The Middle East, and China.