United States July 19, 2023 1:56 pm Why are so many country flags red, white and blue? Ted Kaye, secretary of the North American Vexillological Association, explains why so many country flags in the world are red, white and blue, including the United States flag. US & World Videos 1:07 WATCH: Word War II era US bomb explodes at Japan airport 1:19 Judge: Biden's student loan forgiveness can move forward for now 1:08 Death toll from Helene climbs, hundreds still missing 2:14 Why retired football player Victor Cruz is spreading awareness about obesity 6:12 Fall jean trends and how to style them