Why are so many flags red, white, and blue?

<h3>Why are so many flags red, white, and blue?</h3>

Here's a list:

Australia
Cambodia (if you count the white temple on the flag)
Cape Verde
Costa Rica
Croatia
Cuba
The Czech Republic
The Dominican Republic
France
Iceland
North Korea
South Korea
Laos
Liberia
Luxembourg
Malaysia
The Netherlands
New Zealand
Norway (thought it's mostly red)
Panama
Paraguay
The Philippines
Russia
Samoa
Serbia
Slovakia
Slovenia
Thailand
The United Kingdom
The United States of America
Cook Islands
Taiwan

Why are lots of flags red, white, and blue? What's the meaning?
@Sufia: Then what's blue?


<strong>Cape Verde best answer:</strong>
<p><i>Answer by Robinhood</i><br/>Maybe because those are the true colors.</p>

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