Invention of the Glimmer Moss Engine

Technological achievement

After years of expending a lot of energy and time trying to traverse the powerfully flowing Kerfar Lydd River, and struggling to cross at all in winter months, in 1667 SC two goblins, Grabble Quipsnapper and Zena Erycrag invent a basic engine for their boats. It's fuelled by glimmer moss, a faintly magical moss found in the local Snaptrap Marsh. The engines aren't perfect, but enable the goblins to cross the river far easily, transport more goods further, and visit neighbouring civilisations more often.