18th century

The 18th century was notable for the emergence of the first modern democracies in the United Kingdom, America, and France. (TV: The Reign of Terror) It also marked the beginning of the Industrial Revolution, which may have been inspired by Azal. (TV: The Dæmons)

At unspecified times this century:
 * Weed Creatures were first seen along the North Sea coast. (TV: Fury from the Deep)
 * The Doctor ran Taunton for two weeks and complained that he'd never been so bored. (PROSE: The Highest Science)
 * The Doctor learned to cook in Paris. (TV: The Lodger)
 * Cuthbert Simpson was sent by the Time Lords to Banquo Manor. (PROSE: The Banquo Legacy)