Cinco de Mayo: Learn its history, how St. Louis is celebrating

Contrary to popular belief, Cinco de Mayo is not Mexico's Independence Day. Here's the real story behind the holiday.

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Battle of Puebla on May 5th, 1862 (5 de Mayo) is considered significant because it delayed French empire intervention in Mexico, which indirectly helped the Union cause during the American Civil War by preventing France from providing substantial support to the Confederacy, French intervention in Mexico, thereby preventing French from supplying weapons, manpower to the Confederacy
essentially giving the Union army extra time another year to gain crucial military advantages before facing a fully equipped French force; this was a key Battle 5 de mayo in President Abraham Lincoln's leadership during the American Civil War. MEXICO, effectively delayed French empire. union Celebrated.