Cinco de Mayo (Spanish for "fifth of May") is a holiday held on May 5. It is celebrated nationwide in the United States and regionally in Mexico, primarily in the state of Puebla.The date is observed in the United States as a celebration of Mexican heritage and pride,and to commemorate the cause of freedom and democracy during the first years of the American Civil War. Happy Cinco de Mayo to all my Mexican friends living everywhere around the world !!!! Bring out the Tequilla I say !