<a href="https://en.wikipedia.org/wiki/Treaty_of_Roskilde" id="mwNg" rel="mw:WikiLink" title="Treaty of Roskilde">Treaty of Roskilde</a>: After a devastating defeat in the <a href="https://en.wikipedia.org/wiki/Northern_Wars" id="mwNw" rel="mw:WikiLink" title="Northern Wars">Northern Wars</a> (1655–1661), <a href="https://en.wikipedia.org/wiki/Frederick_III_of_Denmark" id="mwOA" rel="mw:WikiLink" title="Frederick III of Denmark">Frederick III</a>, the King of <a href="https://en.wikipedia.org/wiki/Denmark–Norway" id="mwOQ" rel="mw:WikiLink" title="Denmark–Norway">Denmark–Norway</a> is forced to give up nearly half his territory to Sweden.<sup about="#mwt39" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-5"}}' id="cite_ref-5" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_8#cite_note-5" id="mwOg" style="counter-reset: mw-Ref 5;"><span class="mw-reflink-text" id="mwOw">[5]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-5"><cite about="#mwt36" class="citation book cs1" id="CITEREFLockhart2004">Lockhart, Paul Douglas (13 February 2004). <a class="external text" href="https://books.google.com/books?id=nNYcBQAAQBAJ&amp;pg=PA98" id="mwBmU" rel="mw:ExtLink nofollow"><i id="mwBmY">Sweden in the Seventeenth Century</i></a>. Macmillan International Higher Education. p.<span id="mwBmc" typeof="mw:Entity"> </span>98. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBmg" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBmk" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-0-230-80255-1" id="mwBmo" rel="mw:WikiLink" title="Special:BookSources/978-0-230-80255-1"><bdi id="mwBms">978-0-230-80255-1</bdi></a>. <a class="external text" href="https://web.archive.org/web/20220309141949/https://books.google.com/books?id=nNYcBQAAQBAJ&amp;pg=PA98" id="mwBmw" rel="mw:ExtLink nofollow">Archived</a> from the original on 9 March 2022<span class="reference-accessdate" id="mwBm0">. Retrieved <span class="nowrap" id="mwBm4">14 December</span> 2020</span>.</cite><span about="#mwt36" class="Z3988" id="mwBm8" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Sweden+in+the+Seventeenth+Century&amp;rft.pages=98&amp;rft.pub=Macmillan+International+Higher+Education&amp;rft.date=2004-02-13&amp;rft.isbn=978-0-230-80255-1&amp;rft.aulast=Lockhart&amp;rft.aufirst=Paul+Douglas&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DnNYcBQAAQBAJ%26pg%3DPA98&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+8"></span></span>