Compare between the Lilliputians and Brobdingnagians.
The Lilliputians are relatively warlike. They are quite violent. Consider the way they treat Gulliver when they first find him: they automatically assume that he is a threat, and they tie him down, later shooting him with arrows. Not long after, they tie him up and confine him. Further, there have been a high number of civil wars over completely ridiculous things—like which end of the egg is the correct end to crack—that have resulted in the deaths of thousands of Lilliputians. The emperor insists that Gulliver assist Lilliput in its war with Blefuscu, as the emperor wishes to enslave the Blefuscudians.
The Brobdingnagians are relatively peace-loving. When the King of Brobdingnag hears about the invention of gunpowder, he is absolutely shocked by how barbaric and savage Gulliver's countrymen are. He calls Gulliver just about every terrible name in the book, and he refers to Gulliver's race of men "odious little vermin." The Brobdingnagians have few laws, and those laws are relatively simple and straightforward.