<a href="https://en.wikipedia.org/wiki/Constantine_the_Great" id="mwGA" rel="mw:WikiLink" title="Constantine the Great">Constantine the Great</a> decisively defeats Licinius in the <a href="https://en.wikipedia.org/wiki/Battle_of_Chrysopolis" id="mwGQ" rel="mw:WikiLink" title="Battle of Chrysopolis">Battle of Chrysopolis</a>, establishing Constantine's sole control over the Roman Empire.<sup about="#mwt20" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-2"}}' id="cite_ref-2" rel="dc:references" typeof="mw:Extension/ref"><a href="./September_18#cite_note-2" id="mwGg" style="counter-reset: mw-Ref 2;"><span class="mw-reflink-text" id="mwGw">[2]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-2"><cite about="#mwt17" class="citation book cs1" id="CITEREFCarol_Humphrey_Vivian_Sutherland1966">Carol Humphrey Vivian Sutherland (1966). <a class="external text" href="https://books.google.com/books?id=-irTAAAAMAAJ" id="mwB8I" rel="mw:ExtLink nofollow"><i id="mwB8M">The Roman Imperial Coinage: Constantine and Licinius: A.D. 313-337, by P. M. Bruun</i></a>. Spink. p.<span id="mwB8Q" typeof="mw:Entity"> </span>25. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwB8U" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwB8Y" typeof="mw:Entity"> </span><a href="./Special:BookSources/9780900696855" id="mwB8c" rel="mw:WikiLink" title="Special:BookSources/9780900696855"><bdi id="mwB8g">9780900696855</bdi></a>.</cite><span about="#mwt17" class="Z3988" id="mwB8k" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Roman+Imperial+Coinage%3A+Constantine+and+Licinius%3A+A.D.+313-337%2C+by+P.+M.+Bruun&amp;rft.pages=25&amp;rft.pub=Spink&amp;rft.date=1966&amp;rft.isbn=9780900696855&amp;rft.au=Carol+Humphrey+Vivian+Sutherland&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D-irTAAAAMAAJ&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeptember+18"></span></span>