Flag of the Merina Kingdom.
<a href="//commons.wikimedia.org/wiki/User:Samhanin" title="User:Samhanin">Samhanin</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>, <a rel="nofollow" class="external text" href="http://imgur.com/a/13YI3">Card of the Merina Kingdom</a>