For 10 points, name this president of France from 1848 to 1852 and emperor of France from 1852 to 1870, who was the nephew of an earlier French emperor.
During this man's reign, Paris was rebuilt according to a plan by Baron Haussmann. This ruler defeated Louis-Eugene Cavaignac to win his office. Forces under this man defeated Austria at the Battle of Solferino. This ruler helped appoint Maximilian emperor of Mexico. The end of this man's reign came after his capture at the Battle of Sedan, which also ended the Franco-Prussian War. For 10 points, name this president of France from 1848 to 1852 and emperor of France from 1852 to 1870, who was the nephew of an earlier French emperor.
During this man's reign, Paris was rebuilt according to a plan by Baron Haussmann.
{Napoleon III} of France [or {Charles}-{Louis}-{Napoléon Bonaparte}; prompt on {Napoleon}]