<a class="mw-redirect" href="https://en.wikipedia.org/wiki/Ottoman–Hungarian_wars" id="mwXg" rel="mw:WikiLink" title="Ottoman–Hungarian wars">Ottoman–Hungarian wars</a>: The <a href="https://en.wikipedia.org/wiki/Siege_of_Belgrade_(1456)" id="mwXw" rel="mw:WikiLink" title="Siege of Belgrade (1456)">Siege of Nándorfehérvár (Belgrade)</a> begins.