Answer
Chagatai was the brother Ögedei succeeded as Khan. Ögedei was the third son of Genghis Khan and ruled the Mongol Empire from 1229 to 1241. Chagatai was the second son of Genghis Khan and was known for his military prowess and loyalty to his brother. He played a key role in the Mongol conquests and was responsible for securing the eastern territories of the empire.