answers: Napoleon Bonaparte
context: began to dye his hair to cover the gray, he walked slowly because of gout, and in 1864, at the military camp of Châlons-en-Champagne, he suffered the first medical crisis from his gallstones, the ailment that killed him nine years later. He was less engaged in governing and less attentive to detail, but still sought opportunities to increase French commerce and prestige globally. In 1862, Napoleon III sent troops to Mexico in an effort to establish an allied monarchy in the Americas, with Archduke Ferdinand Maximilian of Austria enthroned as Emperor Maximilian I. However, the Second Mexican Empire faced resistance </s> moved with selected guests to the Palace of Fontainebleau, for walks in the forest, and boating on the lake. In July, the court moved to a thermal bath for a health cure; first to Plombières, then to Vichy, then, after 1856, to the military camp and residence he had built at Châlons-sur-Marne (nowadays: Châlons-en-Champagne) where he could take the waters and review military parades and exercises. Beginning in 1856, the Emperor and Empress spent each September in Biarritz in the Villa Eugenie, a large villa overlooking the sea. They would walk on the beach or travel to the mountains, and </s> was vested with the power of legislative initiative, thereby reducing the scope of the Parliament. Louis-Napoleon was automatically reelected to a fresh term as president. For all intents and purposes, he now held all governing power in the nation. The authoritarian republic proved to be only a stopgap, as Louis-Napoleon immediately set about restoring the empire. In less than a year, following another referendum on 7 November 1852, the Second French Empire was proclaimed. On the symbolic and historic date of 2 December 1852 (the anniversary of the Coronation of Napoleon I in 1804), President Louis-Napoleon Bonaparte became Napoleon III,
question: who crowned himself as an emperor of france in 1804