I'm not sure who 'them' are in the context of the King George story. If it's about subjects during King George's reign, perhaps the laws and social norms of the time were meant to make people behave. For example, there were strict rules about loyalty to the crown.
Well, in the King George story, making 'them' behave depends on who 'them' refers to. If it's the court jesters or servants, the king's authority and the hierarchical structure of the court would play a role. The king could use rewards or punishments. For instance, if a servant misbehaved, they might be banished from the court or lose their privileges. But if it was a more widespread group like the general public, it would involve a complex web of politics, economy, and social factors.
In the King George story, it would be quite a task to'make them behave'. If we consider the colonists in America during King George III's rule, they became rebellious due to issues like taxation without representation. The British government tried to enforce obedience through military presence and laws, but it ultimately failed as the colonists' desire for independence grew stronger.