Napoleon III style
The Napoleon III style was a highly eclectic style of architecture and decorative arts, which used elements of many different historical styles,and also made innovative use of modern materials, such as iron frameworks and glass skylights. It flourished during the reign of Emperor Napoleon III in France (1852–1871) and had an important influence on architecture and decoration in the rest of Europe and the United States. Major examples of the style include the Opéra Garnier in Paris by Charles Garnier (1862–71), the Bibliothèque nationale de France. and the Church of Saint Augustine (1860–1871). The architectural style was closely connected with Haussmann's renovation of Paris carried out during the Second Empire; the new buildings, such as the opera, were intended as the focal points of the new boulevards.
Influence of the French Revolution
Otto Dann and John Dinwiddy report, "It has long been almost a truism of European history that the French Revolution gave a great 
stimulus to the growth of modern nationalism." Nationalism was emphasized by historian Carlton J.H. Hayes as a major result of the French Revolution across Europe. The impact on French nationalism was profound. Napoleon became such a heroic symbol of the nation that the glory was easily picked up by his nephew, who was overwhelmingly elected president (and later became Emperor Napoleon III). The influence was great in the hundreds of small German states and elsewhere, where it was either inspired by the French example or in reaction against it.