The flags of Canada and the United Kingdom are among the most recognizable to most Americans, because of so much shared history and culture.
The Canadian flag is relatively new, only officially adopted on Feb. 15, 1965 to replace the British Union Flag. That date is now the National Flag of Canada Day. It's also know as the Maple Leaf flag, and in bi-lingual Canada, the I'Unifolli', "the one-leafed," in French.
"The Union Jack" of the United Kingdom, composed of England, Scotland, Wales and Northern Ireland is deeply a part of American history too. It's the flag of our "Mother Country, of many of our ancestors, and the flag we fought against, and then alongside, over the centuries.