First of all, although all states do have a 21 year old minimum for buying and drinking alcohol, it is not a federal law. This means that each state is free to create its own laws, punishments, and agencies.
Title: Leinster Flag/ Naval Jack. Description: This flag represents one of the four provinces of Ireland, Leinster, whose capital is Dublin. The flag was previously used by the United Irishmen in 1798, Daniel O'Connel's Repeal of the Union campaign in the 1830s and 1840s, and the Irish Republican Brotherhood (IRB).
The Lone Star Flag of Texas. The Texas state flag is the 1839 National flag of the Republic of Texas, which features the famous Lone Star (also seen on the Great Seal of Texas and the U.S. mint's commemorative quarter for Texas). The red, white, and blue of the state flag of Texas represent bravery, purity and loyalty. Six different national flags have flown over Texas representing the countries which have ruled it (France, Spain, Mexico, the Republic of Texas, the Confederate States of America, and the United States of America).