<a class="mw-redirect" href="https://en.wikipedia.org/wiki/Thirteen_Years'_War_(1454–66)" id="mwKg" rel="mw:WikiLink" title="Thirteen Years' War (1454–66)">Thirteen Years' War</a>: The Secret Council of the <a href="https://en.wikipedia.org/wiki/Prussian_Confederation" id="mwKw" rel="mw:WikiLink" title="Prussian Confederation">Prussian Confederation</a> sends a formal act of disobedience to the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Grand_Masters_of_the_Teutonic_Knights" id="mwLA" rel="mw:WikiLink" title="Grand Masters of the Teutonic Knights">Grand Master</a> of the <a href="https://en.wikipedia.org/wiki/Teutonic_Order" id="mwLQ" rel="mw:WikiLink" title="Teutonic Order">Teutonic Knights</a>, sparking the Thirteen Years' War.<sup about="#mwt33" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-4"}}' id="cite_ref-4" rel="dc:references" typeof="mw:Extension/ref"><a href="./February_4#cite_note-4" id="mwLg" style="counter-reset: mw-Ref 4;"><span class="mw-reflink-text" id="mwLw">[4]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-4"><cite about="#mwt27" class="citation book cs1" id="CITEREFPrtuz1905">Prtuz, Hans (1905). <a class="external text" href="https://books.google.com/books?id=Iws6AQAAIAAJ" id="mwBeI" rel="mw:ExtLink nofollow"><i id="mwBeM">The Age of Renaissance. Vol. X: A History of All Nations</i></a>. Translated by Wright, John Henry. New York: Lea Brothers &amp; Company. p.<span id="mwBeQ" typeof="mw:Entity"> </span>234</cite><span about="#mwt27" class="Z3988" id="mwBeU" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Age+of+Renaissance.+Vol.+X%3A+A+History+of+All+Nations&amp;rft.place=New+York&amp;rft.pages=234&amp;rft.pub=Lea+Brothers+%26+Company&amp;rft.date=1905&amp;rft.aulast=Prtuz&amp;rft.aufirst=Hans&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DIws6AQAAIAAJ&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AFebruary+4"></span>; <link about="#mwt30" data-mw='{"name":"templatestyles","attrs":{"src":"Module:Citation/CS1/styles.css"},"body":{"extsrc":""},"parts":[{"template":{"target":{"wt":"cite book","href":"./Template:Cite_book"},"params":{"last":{"wt":"Sedlar"},"first":{"wt":"Jean W."},"title":{"wt":"A History of East Central Europe. Vol. 3: East Central Europe in the Middle Ages, 1000–1500"},"location":{"wt":"Seattle"},"publisher":{"wt":"University of Washington Press"},"date":{"wt":"2014"},"isbn":{"wt":"9780295972916"},"url":{"wt":"https://books.google.com/books?id=3o5lrvuwOVwC"},"page":{"wt":"294"}},"i":0}}]}' href="mw-data:TemplateStyles:r1215172403" id="mwBeY" rel="mw-deduplicated-inline-style" typeof="mw:Extension/templatestyles mw:Transclusion"/><cite about="#mwt30" class="citation book cs1" id="CITEREFSedlar2014">Sedlar, Jean W. (2014). <a class="external text" href="https://books.google.com/books?id=3o5lrvuwOVwC" id="mwBec" rel="mw:ExtLink nofollow"><i id="mwBeg">A History of East Central Europe. Vol. 3: East Central Europe in the Middle Ages, 1000–1500</i></a>. Seattle: University of Washington Press. p.<span id="mwBek" typeof="mw:Entity"> </span>294. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBeo" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBes" typeof="mw:Entity"> </span><a href="./Special:BookSources/9780295972916" id="mwBew" rel="mw:WikiLink" title="Special:BookSources/9780295972916"><bdi id="mwBe0">9780295972916</bdi></a>.</cite><span about="#mwt30" class="Z3988" id="mwBe4" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=A+History+of+East+Central+Europe.+Vol.+3%3A+East+Central+Europe+in+the+Middle+Ages%2C+1000%E2%80%931500&amp;rft.place=Seattle&amp;rft.pages=294&amp;rft.pub=University+of+Washington+Press&amp;rft.date=2014&amp;rft.isbn=9780295972916&amp;rft.aulast=Sedlar&amp;rft.aufirst=Jean+W.&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D3o5lrvuwOVwC&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AFebruary+4"></span></span>