Map of Vietnamese kingdom in 1857. Book cited: Christopher Goscha, 2016. <i>The Penguin History of Modern Vietnam</i>; Penguin Books Limited.
<a href="//commons.wikimedia.org/w/index.php?title=User:Tr%C6%B0%C6%A1ng_guy&amp;action=edit&amp;redlink=1" class="new" title="User:Trương guy (page does not exist)">Trương guy</a>
2020-08-02
<span class="int-own-work" lang="en">Own work</span>