Answer
Sorghaghtani Beki, Tolui's first wife, played a prominent role during the Mongol Empire's expansion in the 13th century. She was known for her exceptional diplomatic skills and political acumen, contributing significantly to her husband's military successes. Sorghaghtani later served as regent for her grandson, Kublai Khan, when he ascended to the throne, further demonstrating her capabilities as a shrewd and capable leader.