At the <a href="https://en.wikipedia.org/wiki/Diet_of_Porvoo" id="mwTg" rel="mw:WikiLink" title="Diet of Porvoo">Diet of Porvoo</a>, Finland's <a href="https://en.wikipedia.org/wiki/Riksdag_of_the_Estates" id="mwTw" rel="mw:WikiLink" title="Riksdag of the Estates">four Estates</a> pledge allegiance to <a href="https://en.wikipedia.org/wiki/Alexander_I_of_Russia" id="mwUA" rel="mw:WikiLink" title="Alexander I of Russia">Alexander I of Russia</a>, commencing the secession of the <a href="https://en.wikipedia.org/wiki/Grand_Duchy_of_Finland" id="mwUQ" rel="mw:WikiLink" title="Grand Duchy of Finland">Grand Duchy of Finland</a> from <a href="https://en.wikipedia.org/wiki/Lands_of_Sweden" id="mwUg" rel="mw:WikiLink" title="Lands of Sweden">Sweden</a>.<sup about="#mwt51" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-8"}}' id="cite_ref-8" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_29#cite_note-8" id="mwUw" style="counter-reset: mw-Ref 8;"><span class="mw-reflink-text" id="mwVA">[8]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-8"><cite about="#mwt48" class="citation journal cs1" id="CITEREFJussila1988">Jussila, Osmo (September 1988). "Finland and the Russian Duma". <i id="mwCJ0">Journal of Baltic Studies</i>. <b id="mwCJ4">19</b> (3): 241. <a class="mw-redirect" href="./Doi_(identifier)" id="mwCJ8" rel="mw:WikiLink" title="Doi (identifier)">doi</a>:<a class="external text" href="https://doi.org/10.1080%2F01629778800000161" id="mwCKA" rel="mw:ExtLink nofollow">10.1080/01629778800000161</a>.</cite><span about="#mwt48" class="Z3988" id="mwCKE" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Journal+of+Baltic+Studies&amp;rft.atitle=Finland+and+the+Russian+Duma&amp;rft.volume=19&amp;rft.issue=3&amp;rft.pages=241&amp;rft.date=1988-09&amp;rft_id=info%3Adoi%2F10.1080%2F01629778800000161&amp;rft.aulast=Jussila&amp;rft.aufirst=Osmo&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+29"></span></span>