Tuesday is Cinco de Mayo, in Mexico a relatively minor holiday, but in the United States, an excuse to indulge in margaritas, cervezas or beer, guacamole and tacos. But what exactly does Cinco de Mayo celebrate? Brush up on its rich history and modern traditions below. Is Cinco de Mayo the same as Mexico’s independence day? Cinco de Mayo is sometimes confused with “Día de la Independencia,” or Mexico’s independence day. That holiday, also known …