Answer
In April 1864, Archduke Maximilian of Austria accepted the Mexican crown from the French emperor Napoleon III. Maximilian was chosen as emperor by the French, who had intervened in Mexico in 1862 to support the conservative Mexican government against the liberal Mexican forces of Benito Juárez. Maximilian's rule was unpopular with many Mexicans, and he was eventually captured and executed by Juárez's forces in 1867.