What tactic does Gulliver use to frighten the six ringleaders?

Gulliver uses the tactic of pretending to eat one of the ringleaders to frighten them. This action is a dramatic demonstration of his size and strength compared to the tiny Lilliputians. By mimicking the act of consumption, he effectively instills fear in the ringleaders, showcasing his power over them and illustrating the absurdity of their rebellion in light of his overwhelming physical presence. This tactic emphasizes Gulliver's ability to manipulate the situation and exert control without resorting to real violence, which could ultimately lead to more conflict. It also highlights the theme of scale and perspective that runs throughout the novel, as it contrasts Gulliver's giant form with the minuscule size of the Lilliputians, enhancing the comedic elements of their encounters.