Map of Southeast Asia circa 900 CE, showing the Khmer Empire in red, Champa in yellow and Haripunjaya in light Green plus additional surrounding states. 
<p>sources i used for this work include
</p><p><a rel="nofollow" class="external free" href="http://ecaimaps.berkeley.edu/animations/2003_03_khmer_animation.swf">http://ecaimaps.berkeley.edu/animations/2003_03_khmer_animation.swf</a>
<a rel="nofollow" class="external free" href="http://www.britannica.com/EBchecked/media/3395/Khmer-empire-1200">http://www.britannica.com/EBchecked/media/3395/Khmer-empire-1200</a>
Atlas of world history, Patrick Karl O'brien
Societies, Networks, and Transitions: A Global History, Volume B. Craig A.Lockard
<a class="external free" href="https://upload.wikimedia.org/wikipedia/commons/thumb/4/45/Srivijaya_Empire.svg/2000px-Srivijaya_Empire.svg.png">http://upload.wikimedia.org/wikipedia/commons/thumb/4/45/Srivijaya_Empire.svg/2000px-Srivijaya_Empire.svg.png</a>
<a href="https://en.wikipedia.org/wiki/File:DvaravatiMapThailand.png" class="extiw" title="en:File:DvaravatiMapThailand.png">File:DvaravatiMapThailand.png</a>
</p>
<a class="external free" href="https://upload.wikimedia.org/wikipedia/commons/e/eb/Thailand_2002_CIA_map.jpg">http://upload.wikimedia.org/wikipedia/commons/e/eb/Thailand_2002_CIA_map.jpg</a>
<a href="//commons.wikimedia.org/wiki/User:Javierfv1212" title="User:Javierfv1212">Javierfv1212</a>
<span class="int-own-work" lang="en">Own work</span>