Cinco de Mayo is a celebration held on May 5th each year, primarily in Mexico and the United States. It commemorates the victory of the Mexican army over French forces at the Battle of Puebla in 1862. This battle was significant because it symbolized Mexico's resistance against foreign intervention and boosted national pride. In the United States, Cinco de Mayo has evolved into a festive occasion that celebrates Mexican culture and heritage. People enjoy traditional foods like tacos and mole, participate in parades, and listen to lively mariachi music. It's a day filled with joy, unity, and appreciation for Mexican traditions.