<p>Pretty certain the single most surprising thing I've learned in the recent past is that the VIKINGS got to BAGHDAD and repeatedly attacked CONSTANTINOPLE. (They used the Volga&Dnieper.) Not a word about it in my entire education! Here's a brief history:<br /><a href="https://www.history.com/news/globetrotting-vikings-the-quest-for-constantinople" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">history.com/news/globetrotting</span><span class="invisible">-vikings-the-quest-for-constantinople</span></a></p>
