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If “Regency era” is being used to describe the transition between “Georgian” and “Victorian” eras, the focus is on the “pre-Victorian” period from 1811, when the formal Regency began, through 1837 when Queen Victoria succeeded William IV. If, however, “Regency era” is being contrasted with the “Eighteenth century”, then the period includes the later French Revolutionary Wars and the Napoleonic Wars.