St. Patrick's Day, which is celebrated every year on March 17, is one of the few foreign holidays with international "validity" that does not have American roots. Well, that's not quite true either, because the first parade on St. Patrick's Day, the saint who combined religion and beer, was held in Boston in 1737, where it was organized by Irish immigrants wearing green. Everything else is history. The celebration quickly became one of Ireland's main export items.
