However, early Netherlandish painting in the 15th century was the first to make oil the usual painting medium, and explore the use of layers and glazes, followed by the rest of Northern Europe, and only then Italy.
An American flag or for that matter any flag flown upside-down is considered a sign of distress... US Code:T36 Ch10.176. (a) The flag should never be displayed with the union down, except as a signal of dire distress in instances of extreme danger to life or property.
Arms of De Burgh. The Flag of Ulster is a historic banner used to represent Ulster, one of the four provinces of Ireland. The Red Hand of Ulster is a symbol that is either derived from the O'Neill dynasty, then the most prominent Irish clan in Ulster, or the Dextra Dei of early Christian iconography.