The King of Brobdingnag is disgusted by the existence of gunpowder so that Gulliver is forbidden by him to ever mention it again.
Brobdingnag is a fictional land in Jonathan Swift's 1726 satirical novel Gulliver's Travels inhabited by giants.
Gulliver's Travels is a prose satire wirtten by Irish writer and clergyman Jonathan Swift, that constitutes a satire on human nature as well as the "travellers' tales" literary subgenre.