To answer your question, my student, Biedermeier was not a style, but rather a period in the history of the German-speaking world. Historians tend to chronologically define the period to the years between 1815 and 1848. Biedermeier is not a style, but rather a mood, characterized by functionality, rationality, material beauty, and a quest for a visual expression the German soul and identity. In furniture and decorative
arts, the Biedermeier is marked by the development of a style which emphasized on practicality and comfort, with plain and simple decorative elements and furnishing which emphasized on comfort. While the period was marked by a growing middle class and the replacement of stately splendid buildings with simple houses of cozy interiors, Biedermeier has often been described as a bourgeois mode, created by bourgeois craftsmen for bourgeois clients at a time when aristocracy no longer dominated matters of taste and style.