Why do so many countries have the colors red, blue, and white on their flags?

Question

Why do so many countries have the colors red, blue, and white on their flags?

In: Other

Answer 1

Red, white and blue represent the political ideology of liberalism—similar to how red and yellow symbolize communism and red and black anarchism—and (classical) liberalism is the political ideology that has dominated most European countries since the Spring of Nations.