Directions: Which sentence is different in context from the others?

(I) Fairs were first established in Medieval times as a means of bringing traders and customers together at stated places and periods. (II) Among the earliest examples were those of Winchester and Stourbridge in England. (III) To these fairs came traders from the Continent and the Baltic region. (IV) Today's fairs are of a different nature, being largely expositions of high technology. (V) They did business with the English merchants, and goods of every kind were exchanged.