Constantine I <a href="https://en.wikipedia.org/wiki/Battle_of_Cibalae" id="mwEQ" rel="mw:WikiLink" title="Battle of Cibalae">defeats</a> Roman Emperor Licinius, who loses his European territories.<sup about="#mwt12" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-1"}}' id="cite_ref-1" rel="dc:references" typeof="mw:Extension/ref"><a href="./October_8#cite_note-1" id="mwEg" style="counter-reset: mw-Ref 1;"><span class="mw-reflink-text" id="mwEw">[1]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-1">For the consensus on dating of the battle of Cibalae in 316, see A.S. Christensen, L. Baerentzen, <i id="mwByQ">Lactantius the Historian</i>, Museum Tusculanum Press, 1980, p.23, W. Treadgold, <i id="mwByU">A history of the Byzantine State and Society</i>, Stanford University Press, 1997, p. 34, D.S. Potter, p. 378 and C. Odahl, p. 164. For the alternative dating at 314 see, among others, <a href="./Ramsay_MacMullen" id="mwByY" rel="mw:WikiLink" title="Ramsay MacMullen">Ramsay MacMullen</a>, <i id="mwByc">Constantine</i>, Routledge, 1987, p. 67 and A. H. M. Jones, <i id="mwByg">Constantine and the Conversion of Europe</i>, The English University Press, 1948, p. 127</span>