Canada

The National Flag of Canada, popularly known as the Maple Leaf and l'Unifolié (French for "the one-leaved"), is a base red flag with a white square in its centre featuring a stylized, 11-pointed, red maple leaf.

... Out of three choices, the maple leaf design by George F.G. Stanley was chosen as the winner. The current flag was adopted in 1964. The flag made its first appearance on February 15, 1965, which is now celebrated annually as Flag Day. [More info] MADE IN USA!