What did Genghis Khan’s sons do after they took over his empire? They led their own wars to expand the size of the empire.
They prevented one another from crossing into each other’s territory.
They sent their soldiers to the capital to support the Great Khan.
They governed the divided empire so badly that the people revolted.

Two gymnastics teams are intense rivals. the first team has started recruiting new gymnasts from different cities and even foreign countires in an effort to build a stronger team. after learning this, the secondteam begins its own recruitment campaign to find better gymnasts. over a period of months, each team recruits dozens of players, each time trying to find a better recruit than its rivals most recent addition. which idea from the cold war is most similar to this scenario