On the death of <a href="https://en.wikipedia.org/wiki/Nerva" id="mwEQ" rel="mw:WikiLink" title="Nerva">Nerva</a>, <a href="https://en.wikipedia.org/wiki/Trajan" id="mwEg" rel="mw:WikiLink" title="Trajan">Trajan</a> is declared Roman emperor in <a href="https://en.wikipedia.org/wiki/Cologne" id="mwEw" rel="mw:WikiLink" title="Cologne">Cologne</a>, the seat of his government in lower Germany.<sup about="#mwt15" 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="./January_28#cite_note-1" id="mwFA" style="counter-reset: mw-Ref 1;"><span class="mw-reflink-text" id="mwFQ">[1]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-1"><cite about="#mwt12" class="citation book cs1" id="CITEREFLegrand1989">Legrand, Jacques (1989). <i id="mwBuI">Chronicle of the World</i>. Ecam Publication. p.<span id="mwBuM" typeof="mw:Entity"> </span>222. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBuQ" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBuU" typeof="mw:Entity"> </span><a href="./Special:BookSources/0-13-133463-8" id="mwBuY" rel="mw:WikiLink" title="Special:BookSources/0-13-133463-8"><bdi id="mwBuc">0-13-133463-8</bdi></a>.</cite><span about="#mwt12" class="Z3988" id="mwBug" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Chronicle+of+the+World&amp;rft.pages=222&amp;rft.pub=Ecam+Publication&amp;rft.date=1989&amp;rft.isbn=0-13-133463-8&amp;rft.aulast=Legrand&amp;rft.aufirst=Jacques&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AJanuary+28"></span></span>