When Temujin was 20, he was captured and enslaved by a rival clan. When he broke free, he made an army of 20,000 men and destroyed the rival clan. After that, he decided to unite the Mongols. What did Temujin do after breaking free from the rival clan?
1) He formed an alliance with the rival clan
2) He became a nomadic herder
3) He made an army of 20,000 men and destroyed the rival clan
4) He retired from military life